Duplicating Menu Actions when switching profiles (microsoft#165274)

Fixes microsoft#161910

Author: alexr00

src/vs/workbench/api/browser/viewsExtensionPoint.ts

@@ -573,6 +573,12 @@ class ViewsExtensionHandler implements IWorkbenchContribution {
 			const removedViews = this.viewsRegistry.getViews(viewContainer).filter(v => (v as ICustomViewDescriptor).extensionId && removedExtensions.has(ExtensionIdentifier.toKey((v as ICustomViewDescriptor).extensionId)));
 			if (removedViews.length) {
 				this.viewsRegistry.deregisterViews(removedViews, viewContainer);
+				for (const view of removedViews) {
+					const anyView = view as ICustomTreeViewDescriptor;
+					if (anyView.treeView) {
+						anyView.treeView.dispose();
+					}
+				}
 			}
 		}
 	}