Fixes microsoft#163789

src/vs/workbench/contrib/terminal/browser/terminalGroupService.ts

@@ -181,12 +181,7 @@ export class TerminalGroupService extends Disposable implements ITerminalGroupSe
 				}
 				// Do not await the focus as setVisible must be called immediately to ensure
 				// something else didn't steal focus
-				instance.focusWhenReady(true);
-				// HACK: as a workaround for https://github.com/microsoft/vscode/issues/134692,
-				// this will trigger a forced refresh of the viewport to sync the viewport and scroll bar.
-				// This can likely be removed after https://github.com/xtermjs/xterm.js/issues/291 is
-				// fixed upstream.
-				instance.setVisible(true);
+				await instance.focusWhenReady(true);
 			}
 		}
 		this._onDidShow.fire();

src/vs/workbench/contrib/terminal/browser/terminalView.ts

@@ -47,7 +47,6 @@ import { ServicesAccessor } from 'vs/editor/browser/editorExtensions';
 import { TerminalCapability } from 'vs/platform/terminal/common/capabilities/capabilities';
 
 export class TerminalViewPane extends ViewPane {
-	private _actions: IAction[] | undefined;
 	private _fontStyleElement: HTMLElement | undefined;
 	private _parentDomElement: HTMLElement | undefined;
 	private _terminalTabbedView?: TerminalTabbedView;
@@ -81,11 +80,6 @@ export class TerminalViewPane extends ViewPane {
 	) {
 		super(options, keybindingService, _contextMenuService, _configurationService, _contextKeyService, viewDescriptorService, _instantiationService, openerService, themeService, telemetryService);
 		this._register(this._terminalService.onDidRegisterProcessSupport(() => {
-			if (this._actions) {
-				for (const action of this._actions) {
-					action.enabled = true;
-				}
-			}
 			this._onDidChangeViewWelcomeState.fire();
 		}));
 
@@ -164,11 +158,11 @@ export class TerminalViewPane extends ViewPane {
 		this._register(this.onDidChangeBodyVisibility(async visible => {
 			this._viewShowing.set(visible);
 			if (visible) {
-				const hadTerminals = !!this._terminalGroupService.groups.length;
-				// Ensure the primary backend is registered as it's important to do before
-				// initializeTerminals is called.
-				await this._terminalService.primaryBackendRegistered;
 				if (this._terminalService.isProcessSupportRegistered) {
+					const hadTerminals = !!this._terminalGroupService.groups.length;
+					// Ensure the primary backend is registered as it's important to do before
+					// initializeTerminals is called.
+					await this._terminalService.primaryBackendRegistered;
 					if (this._terminalsInitialized) {
 						if (!hadTerminals) {
 							this._terminalService.createTerminal({ location: TerminalLocation.Panel });