fixes #62629

src/vs/workbench/api/electron-browser/mainThreadEditors.ts

@@ -24,6 +24,8 @@ import { ExtHostContext, ExtHostEditorsShape, IApplyEditsOptions, IExtHostContex
 import { EditorViewColumn, editorGroupToViewColumn, viewColumnToEditorGroup } from 'vs/workbench/api/shared/editor';
 import { IEditorService } from 'vs/workbench/services/editor/common/editorService';
 import { IEditorGroupsService } from 'vs/workbench/services/group/common/editorGroupsService';
+import { IURLService } from 'vs/platform/url/common/url';
+import product from 'vs/platform/node/product';
 
 export class MainThreadTextEditors implements MainThreadTextEditorsShape {
 
@@ -264,6 +266,7 @@ CommandsRegistry.registerCommand('_workbench.open', function (accessor: Services
 	const editorService = accessor.get(IEditorService);
 	const editorGroupService = accessor.get(IEditorGroupsService);
 	const openerService = accessor.get(IOpenerService);
+	const urlService = accessor.get(IURLService);
 
 	const [resource, options, position, label] = args;
 
@@ -277,6 +280,10 @@ CommandsRegistry.registerCommand('_workbench.open', function (accessor: Services
 		return Promise.resolve(void 0);
 	}
 
+	if (resource && (resource.scheme === product.urlProtocol || /^vscode/.test(resource.scheme))) {
+		return urlService.open(resource).then(_ => void 0);
+	}
+
 	// finally, delegate to opener service
 	return openerService.open(resource).then(_ => void 0);
 });