help-inline breaks when using input-prepend or input-append on regular vertical form

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When using a horizontal form everything works as expected. However, when switched to a regular vertical form the 'help-inline' spans fall down to the next line. This only happens when using 'input-prepend' or 'input-append'. If not using 'input-prepend' or 'input-append' the 'help-inline' stays on the right line but is not vertically aligned.

Example jsfiddle: http://jsfiddle.net/rkFpq/10/
Related Issue: #6460

[haggen]

The missing fix:

.input-append,
.input-prepend {
  display: inline-block;
  vertical-align: middle;
  margin-bottom: 10px;
}

The margin-bottom: 10px; is because originally it has only 5px - as in 2.2.2 - while regular inputs has 10px, so I aligned them.

[mdo]

Added the fixes that @haggen mentioned in #6346. Thanks!