diff --git a/blockly_compressed_horizontal.js b/blockly_compressed_horizontal.js
index 9cbf9388a7..67a96537a9 100644
--- a/blockly_compressed_horizontal.js
+++ b/blockly_compressed_horizontal.js
@@ -1326,11 +1326,11 @@ Blockly.Css.inject=function(a,b){if(!Blockly.Css.styleSheet_){var c=".blocklyDra
 Blockly.Css.setCursor=function(a){if(Blockly.Css.currentCursor_!=a){Blockly.Css.currentCursor_=a;var b="url("+Blockly.Css.mediaPath_+"/"+a+".cur), auto",c=".blocklyDraggable {\n  cursor: "+b+";\n}\n";Blockly.Css.styleSheet_.deleteRule(0);Blockly.Css.styleSheet_.insertRule(c,0);for(var c=document.getElementsByClassName("blocklyToolboxDiv"),d=0,e;e=c[d];d++)e.style.cursor=a==Blockly.Css.Cursor.DELETE?b:"";document.body.parentNode.style.cursor=a==Blockly.Css.Cursor.OPEN?"":b}};
 Blockly.Css.CONTENT=[".blocklySvg {","background-color: "+Blockly.Colours.workspace+";","outline: none;","overflow: hidden;","}",".blocklyRelativeWrapper {","position: relative;","width: 100%;","height: 100%;","}",".blocklyWidgetDiv {","display: none;","position: absolute;","z-index: 999;","}",".blocklyWidgetDiv.fieldTextInput {","overflow: hidden;","border: 1px solid;","box-sizing: border-box;","transform-origin: 0 0;","-ms-transform-origin: 0 0;","-moz-transform-origin: 0 0;","-webkit-transform-origin: 0 0;",
 "}",".blocklyNonSelectable {","user-select: none;","-moz-user-select: none;","-webkit-user-select: none;","-ms-user-select: none;","}",".blocklyTooltipDiv {","background-color: #ffffc7;","border: 1px solid #ddc;","box-shadow: 4px 4px 20px 1px rgba(0,0,0,.15);","color: #000;","display: none;","font-family: sans-serif;","font-size: 9pt;","opacity: 0.9;","padding: 2px;","position: absolute;","z-index: 1000;","}",".blocklyDragSurface {","display: none;","position: absolute;","top: 0;","left: 0;","right: 0;",
-"bottom: 0;","overflow: visible;","z-index: 5000;","-webkit-backface-visibility: hidden;","backface-visibility: hidden;","-webkit-perspective: 1000;","perspective: 1000;","}",".blocklyResizeSE {","cursor: se-resize;","fill: #aaa;","}",".blocklyResizeSW {","cursor: sw-resize;","fill: #aaa;","}",".blocklyResizeLine {","stroke: #888;","stroke-width: 1;","}",".blocklyHighlightedConnectionPath {","fill: none;","stroke: #fc3;","stroke-width: 4px;","}",".blocklyPath {","stroke-width: 1px;","}",".blocklySelected>.blocklyPath {",
-"}",".blocklyDragging>.blocklyPath {","}",".blocklyDisabled>.blocklyPath {","fill-opacity: .5;","stroke-opacity: .5;","}",".blocklyText {","cursor: default;","fill: #fff;","font-family: sans-serif;","font-size: 11pt;","}",".blocklyNonEditableText>text {","pointer-events: none;","}",".blocklyNonEditableText>rect,",".blocklyEditableText>rect {","fill: #fff;","fill-opacity: .6;","}",".blocklyNonEditableText>text,",".blocklyEditableText>text {","fill: "+Blockly.Colours.text+";","}",".blocklyEditableText:hover>rect {",
-"stroke: #fff;","stroke-width: 2;","}",".blocklyBubbleText {","fill:"+Blockly.Colours.text+";","}",".blocklySvg text {","user-select: none;","-moz-user-select: none;","-webkit-user-select: none;","cursor: inherit;","}",".blocklyHidden {","display: none;","}",".blocklyFieldDropdown:not(.blocklyHidden) {","display: block;","}",".blocklyIconGroup {","cursor: default;","}",".blocklyIconGroup:not(:hover),",".blocklyIconGroupReadonly {","opacity: .6;","}",".blocklyIconShape {","fill: #00f;","stroke: #fff;",
-"stroke-width: 1px;","}",".blocklyIconSymbol {","fill: #fff;","}",".blocklyMinimalBody {","margin: 0;","padding: 0;","}",".blocklyCommentTextarea {","background-color: #ffc;","border: 0;","margin: 0;","padding: 2px;","resize: none;","}",".blocklyHtmlInput {","border: none;","font-family: sans-serif;","height: 100%;","margin: 0;","outline: none;","padding: 2px 0;","width: 100%;","text-align: center;","}",".blocklyMainBackground {","stroke-width: 1;","stroke: #c6c6c6;","}",".blocklyMutatorBackground {",
-"fill: #fff;","stroke: #ddd;","stroke-width: 1;","}",".blocklyFlyoutBackground {","fill: #ddd;","fill-opacity: .8;","}",".blocklyScrollbarBackground {","opacity: 0;","}",".blocklyScrollbarKnob {","fill: #ccc;","}",".blocklyScrollbarBackground:hover+.blocklyScrollbarKnob,",".blocklyScrollbarKnob:hover {","fill: #bbb;","}",".blocklyZoom>image {","opacity: .4;","}",".blocklyZoom>image:hover {","opacity: .6;","}",".blocklyZoom>image:active {","opacity: .8;","}",".blocklyFlyout .blocklyScrollbarKnob {",
+"bottom: 0;","overflow: visible !important;","z-index: 5000;","-webkit-backface-visibility: hidden;","backface-visibility: hidden;","-webkit-perspective: 1000;","perspective: 1000;","}",".blocklyResizeSE {","cursor: se-resize;","fill: #aaa;","}",".blocklyResizeSW {","cursor: sw-resize;","fill: #aaa;","}",".blocklyResizeLine {","stroke: #888;","stroke-width: 1;","}",".blocklyHighlightedConnectionPath {","fill: none;","stroke: #fc3;","stroke-width: 4px;","}",".blocklyPath {","stroke-width: 1px;","}",
+".blocklySelected>.blocklyPath {","}",".blocklyDragging>.blocklyPath {","}",".blocklyDisabled>.blocklyPath {","fill-opacity: .5;","stroke-opacity: .5;","}",".blocklyText {","cursor: default;","fill: #fff;","font-family: sans-serif;","font-size: 11pt;","}",".blocklyNonEditableText>text {","pointer-events: none;","}",".blocklyNonEditableText>rect,",".blocklyEditableText>rect {","fill: #fff;","fill-opacity: .6;","}",".blocklyNonEditableText>text,",".blocklyEditableText>text {","fill: "+Blockly.Colours.text+
+";","}",".blocklyEditableText:hover>rect {","stroke: #fff;","stroke-width: 2;","}",".blocklyBubbleText {","fill:"+Blockly.Colours.text+";","}",".blocklySvg text {","user-select: none;","-moz-user-select: none;","-webkit-user-select: none;","cursor: inherit;","}",".blocklyHidden {","display: none;","}",".blocklyFieldDropdown:not(.blocklyHidden) {","display: block;","}",".blocklyIconGroup {","cursor: default;","}",".blocklyIconGroup:not(:hover),",".blocklyIconGroupReadonly {","opacity: .6;","}",".blocklyIconShape {",
+"fill: #00f;","stroke: #fff;","stroke-width: 1px;","}",".blocklyIconSymbol {","fill: #fff;","}",".blocklyMinimalBody {","margin: 0;","padding: 0;","}",".blocklyCommentTextarea {","background-color: #ffc;","border: 0;","margin: 0;","padding: 2px;","resize: none;","}",".blocklyHtmlInput {","border: none;","font-family: sans-serif;","height: 100%;","margin: 0;","outline: none;","padding: 2px 0;","width: 100%;","text-align: center;","}",".blocklyMainBackground {","stroke-width: 1;","stroke: #c6c6c6;",
+"}",".blocklyMutatorBackground {","fill: #fff;","stroke: #ddd;","stroke-width: 1;","}",".blocklyFlyoutBackground {","fill: #ddd;","fill-opacity: .8;","}",".blocklyScrollbarBackground {","opacity: 0;","}",".blocklyScrollbarKnob {","fill: #ccc;","}",".blocklyScrollbarBackground:hover+.blocklyScrollbarKnob,",".blocklyScrollbarKnob:hover {","fill: #bbb;","}",".blocklyZoom>image {","opacity: .4;","}",".blocklyZoom>image:hover {","opacity: .6;","}",".blocklyZoom>image:active {","opacity: .8;","}",".blocklyFlyout .blocklyScrollbarKnob {",
 "fill: #bbb;","}",".blocklyFlyout .blocklyScrollbarBackground:hover+.blocklyScrollbarKnob,",".blocklyFlyout .blocklyScrollbarKnob:hover {","fill: #aaa;","}",".blocklyInvalidInput {","background: #faa;","}",".blocklyAngleCircle {","stroke: #444;","stroke-width: 1;","fill: #ddd;","fill-opacity: .8;","}",".blocklyAngleMarks {","stroke: #444;","stroke-width: 1;","}",".blocklyAngleGauge {","fill: #f88;","fill-opacity: .8;","}",".blocklyAngleLine {","stroke: #f00;","stroke-width: 2;","stroke-linecap: round;",
 "}",".blocklyContextMenu {","border-radius: 4px;","}",".blocklyDropdownMenu {","padding: 0 !important;","}",".blocklyWidgetDiv .goog-option-selected .goog-menuitem-checkbox,",".blocklyWidgetDiv .goog-option-selected .goog-menuitem-icon {","background: url(<<<PATH>>>/sprites.png) no-repeat -48px -16px !important;","}",".blocklyToolboxDiv {","background-color: #ddd;","overflow-x: visible;","overflow-y: auto;","position: absolute;","}",".blocklyTreeRoot {","padding: 4px 0;","}",".blocklyTreeRoot:focus {",
 "outline: none;","}",".blocklyTreeRow {","height: 22px;","line-height: 22px;","margin-bottom: 3px;","padding-right: 8px;","white-space: nowrap;","}",".blocklyHorizontalTree {","float: left;","margin: 1px 5px 8px 0px;","}",".blocklyHorizontalTreeRtl {","float: right;","margin: 1px 0px 8px 5px;","}",'.blocklyToolboxDiv[dir="RTL"] .blocklyTreeRow {',"margin-left: 8px;","}",".blocklyTreeRow:not(.blocklyTreeSelected):hover {","background-color: #e4e4e4;","}",".blocklyTreeSeparator {","border-bottom: solid #e5e5e5 1px;",
diff --git a/blockly_compressed_vertical.js b/blockly_compressed_vertical.js
index 3b5e9b5dc5..3caec9a1c9 100644
--- a/blockly_compressed_vertical.js
+++ b/blockly_compressed_vertical.js
@@ -1330,11 +1330,11 @@ Blockly.Css.inject=function(a,b){if(!Blockly.Css.styleSheet_){var c=".blocklyDra
 Blockly.Css.setCursor=function(a){if(Blockly.Css.currentCursor_!=a){Blockly.Css.currentCursor_=a;var b="url("+Blockly.Css.mediaPath_+"/"+a+".cur), auto",c=".blocklyDraggable {\n  cursor: "+b+";\n}\n";Blockly.Css.styleSheet_.deleteRule(0);Blockly.Css.styleSheet_.insertRule(c,0);for(var c=document.getElementsByClassName("blocklyToolboxDiv"),d=0,e;e=c[d];d++)e.style.cursor=a==Blockly.Css.Cursor.DELETE?b:"";document.body.parentNode.style.cursor=a==Blockly.Css.Cursor.OPEN?"":b}};
 Blockly.Css.CONTENT=[".blocklySvg {","background-color: "+Blockly.Colours.workspace+";","outline: none;","overflow: hidden;","}",".blocklyRelativeWrapper {","position: relative;","width: 100%;","height: 100%;","}",".blocklyWidgetDiv {","display: none;","position: absolute;","z-index: 999;","}",".blocklyWidgetDiv.fieldTextInput {","overflow: hidden;","border: 1px solid;","box-sizing: border-box;","transform-origin: 0 0;","-ms-transform-origin: 0 0;","-moz-transform-origin: 0 0;","-webkit-transform-origin: 0 0;",
 "}",".blocklyNonSelectable {","user-select: none;","-moz-user-select: none;","-webkit-user-select: none;","-ms-user-select: none;","}",".blocklyTooltipDiv {","background-color: #ffffc7;","border: 1px solid #ddc;","box-shadow: 4px 4px 20px 1px rgba(0,0,0,.15);","color: #000;","display: none;","font-family: sans-serif;","font-size: 9pt;","opacity: 0.9;","padding: 2px;","position: absolute;","z-index: 1000;","}",".blocklyDragSurface {","display: none;","position: absolute;","top: 0;","left: 0;","right: 0;",
-"bottom: 0;","overflow: visible;","z-index: 5000;","-webkit-backface-visibility: hidden;","backface-visibility: hidden;","-webkit-perspective: 1000;","perspective: 1000;","}",".blocklyResizeSE {","cursor: se-resize;","fill: #aaa;","}",".blocklyResizeSW {","cursor: sw-resize;","fill: #aaa;","}",".blocklyResizeLine {","stroke: #888;","stroke-width: 1;","}",".blocklyHighlightedConnectionPath {","fill: none;","stroke: #fc3;","stroke-width: 4px;","}",".blocklyPath {","stroke-width: 1px;","}",".blocklySelected>.blocklyPath {",
-"}",".blocklyDragging>.blocklyPath {","}",".blocklyDisabled>.blocklyPath {","fill-opacity: .5;","stroke-opacity: .5;","}",".blocklyText {","cursor: default;","fill: #fff;","font-family: sans-serif;","font-size: 11pt;","}",".blocklyNonEditableText>text {","pointer-events: none;","}",".blocklyNonEditableText>rect,",".blocklyEditableText>rect {","fill: #fff;","fill-opacity: .6;","}",".blocklyNonEditableText>text,",".blocklyEditableText>text {","fill: "+Blockly.Colours.text+";","}",".blocklyEditableText:hover>rect {",
-"stroke: #fff;","stroke-width: 2;","}",".blocklyBubbleText {","fill:"+Blockly.Colours.text+";","}",".blocklySvg text {","user-select: none;","-moz-user-select: none;","-webkit-user-select: none;","cursor: inherit;","}",".blocklyHidden {","display: none;","}",".blocklyFieldDropdown:not(.blocklyHidden) {","display: block;","}",".blocklyIconGroup {","cursor: default;","}",".blocklyIconGroup:not(:hover),",".blocklyIconGroupReadonly {","opacity: .6;","}",".blocklyIconShape {","fill: #00f;","stroke: #fff;",
-"stroke-width: 1px;","}",".blocklyIconSymbol {","fill: #fff;","}",".blocklyMinimalBody {","margin: 0;","padding: 0;","}",".blocklyCommentTextarea {","background-color: #ffc;","border: 0;","margin: 0;","padding: 2px;","resize: none;","}",".blocklyHtmlInput {","border: none;","font-family: sans-serif;","height: 100%;","margin: 0;","outline: none;","padding: 2px 0;","width: 100%;","text-align: center;","}",".blocklyMainBackground {","stroke-width: 1;","stroke: #c6c6c6;","}",".blocklyMutatorBackground {",
-"fill: #fff;","stroke: #ddd;","stroke-width: 1;","}",".blocklyFlyoutBackground {","fill: #ddd;","fill-opacity: .8;","}",".blocklyScrollbarBackground {","opacity: 0;","}",".blocklyScrollbarKnob {","fill: #ccc;","}",".blocklyScrollbarBackground:hover+.blocklyScrollbarKnob,",".blocklyScrollbarKnob:hover {","fill: #bbb;","}",".blocklyZoom>image {","opacity: .4;","}",".blocklyZoom>image:hover {","opacity: .6;","}",".blocklyZoom>image:active {","opacity: .8;","}",".blocklyFlyout .blocklyScrollbarKnob {",
+"bottom: 0;","overflow: visible !important;","z-index: 5000;","-webkit-backface-visibility: hidden;","backface-visibility: hidden;","-webkit-perspective: 1000;","perspective: 1000;","}",".blocklyResizeSE {","cursor: se-resize;","fill: #aaa;","}",".blocklyResizeSW {","cursor: sw-resize;","fill: #aaa;","}",".blocklyResizeLine {","stroke: #888;","stroke-width: 1;","}",".blocklyHighlightedConnectionPath {","fill: none;","stroke: #fc3;","stroke-width: 4px;","}",".blocklyPath {","stroke-width: 1px;","}",
+".blocklySelected>.blocklyPath {","}",".blocklyDragging>.blocklyPath {","}",".blocklyDisabled>.blocklyPath {","fill-opacity: .5;","stroke-opacity: .5;","}",".blocklyText {","cursor: default;","fill: #fff;","font-family: sans-serif;","font-size: 11pt;","}",".blocklyNonEditableText>text {","pointer-events: none;","}",".blocklyNonEditableText>rect,",".blocklyEditableText>rect {","fill: #fff;","fill-opacity: .6;","}",".blocklyNonEditableText>text,",".blocklyEditableText>text {","fill: "+Blockly.Colours.text+
+";","}",".blocklyEditableText:hover>rect {","stroke: #fff;","stroke-width: 2;","}",".blocklyBubbleText {","fill:"+Blockly.Colours.text+";","}",".blocklySvg text {","user-select: none;","-moz-user-select: none;","-webkit-user-select: none;","cursor: inherit;","}",".blocklyHidden {","display: none;","}",".blocklyFieldDropdown:not(.blocklyHidden) {","display: block;","}",".blocklyIconGroup {","cursor: default;","}",".blocklyIconGroup:not(:hover),",".blocklyIconGroupReadonly {","opacity: .6;","}",".blocklyIconShape {",
+"fill: #00f;","stroke: #fff;","stroke-width: 1px;","}",".blocklyIconSymbol {","fill: #fff;","}",".blocklyMinimalBody {","margin: 0;","padding: 0;","}",".blocklyCommentTextarea {","background-color: #ffc;","border: 0;","margin: 0;","padding: 2px;","resize: none;","}",".blocklyHtmlInput {","border: none;","font-family: sans-serif;","height: 100%;","margin: 0;","outline: none;","padding: 2px 0;","width: 100%;","text-align: center;","}",".blocklyMainBackground {","stroke-width: 1;","stroke: #c6c6c6;",
+"}",".blocklyMutatorBackground {","fill: #fff;","stroke: #ddd;","stroke-width: 1;","}",".blocklyFlyoutBackground {","fill: #ddd;","fill-opacity: .8;","}",".blocklyScrollbarBackground {","opacity: 0;","}",".blocklyScrollbarKnob {","fill: #ccc;","}",".blocklyScrollbarBackground:hover+.blocklyScrollbarKnob,",".blocklyScrollbarKnob:hover {","fill: #bbb;","}",".blocklyZoom>image {","opacity: .4;","}",".blocklyZoom>image:hover {","opacity: .6;","}",".blocklyZoom>image:active {","opacity: .8;","}",".blocklyFlyout .blocklyScrollbarKnob {",
 "fill: #bbb;","}",".blocklyFlyout .blocklyScrollbarBackground:hover+.blocklyScrollbarKnob,",".blocklyFlyout .blocklyScrollbarKnob:hover {","fill: #aaa;","}",".blocklyInvalidInput {","background: #faa;","}",".blocklyAngleCircle {","stroke: #444;","stroke-width: 1;","fill: #ddd;","fill-opacity: .8;","}",".blocklyAngleMarks {","stroke: #444;","stroke-width: 1;","}",".blocklyAngleGauge {","fill: #f88;","fill-opacity: .8;","}",".blocklyAngleLine {","stroke: #f00;","stroke-width: 2;","stroke-linecap: round;",
 "}",".blocklyContextMenu {","border-radius: 4px;","}",".blocklyDropdownMenu {","padding: 0 !important;","}",".blocklyWidgetDiv .goog-option-selected .goog-menuitem-checkbox,",".blocklyWidgetDiv .goog-option-selected .goog-menuitem-icon {","background: url(<<<PATH>>>/sprites.png) no-repeat -48px -16px !important;","}",".blocklyToolboxDiv {","background-color: #ddd;","overflow-x: visible;","overflow-y: auto;","position: absolute;","}",".blocklyTreeRoot {","padding: 4px 0;","}",".blocklyTreeRoot:focus {",
 "outline: none;","}",".blocklyTreeRow {","height: 22px;","line-height: 22px;","margin-bottom: 3px;","padding-right: 8px;","white-space: nowrap;","}",".blocklyHorizontalTree {","float: left;","margin: 1px 5px 8px 0px;","}",".blocklyHorizontalTreeRtl {","float: right;","margin: 1px 0px 8px 5px;","}",'.blocklyToolboxDiv[dir="RTL"] .blocklyTreeRow {',"margin-left: 8px;","}",".blocklyTreeRow:not(.blocklyTreeSelected):hover {","background-color: #e4e4e4;","}",".blocklyTreeSeparator {","border-bottom: solid #e5e5e5 1px;",
diff --git a/core/css.js b/core/css.js
index 3b3765bb31..3dabd11eaa 100644
--- a/core/css.js
+++ b/core/css.js
@@ -190,7 +190,7 @@ Blockly.Css.CONTENT = [
     'left: 0;',
     'right: 0;',
     'bottom: 0;',
-    'overflow: visible;',
+    'overflow: visible !important;',
     'z-index: 5000;', /* Always display on top */
     '-webkit-backface-visibility: hidden;',
     'backface-visibility: hidden;',