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"ReferenceWidget depends on UNKNOWN service IPeekViewService" error since 0.17

See original GitHub issue

monaco-editor version: 0.17.1 Browser: Chrome / Firefox OS: Win

Steps or JS usage snippet reproducing the issue:

Just open the Monaco Editor playground and hit Shift+F12 or Alt+F12 on a symbol.

Error in the browser console:

as text

simpleServices.js:206 Error: [createInstance] ReferenceWidget depends on UNKNOWN service IPeekViewService.
    at InstantiationService._createInstance (instantiationService.js:144)
    at InstantiationService.createInstance (instantiationService.js:118)
    at StandaloneReferencesController.ReferencesController.toggleWidget (referencesController.js:248)
    at ReferenceAction.run (referenceSearch.js:140)
    at ReferenceAction.EditorAction.runEditorCommand (editorExtensions.js:230)
    at editorExtensions.js:187
    at InstantiationService.invokeFunction (instantiationService.js:94)
    at StandaloneEditor.CodeEditorWidget.invokeWithinContext (codeEditorWidget.js:298)
    at ReferenceAction.EditorCommand.runCommand (editorExtensions.js:179)
    at handler (editorExtensions.js:101)
    at InstantiationService.invokeFunction (instantiationService.js:94)
    at StandaloneCommandService.executeCommand (simpleServices.js:260)
    at StandaloneKeybindingService.AbstractKeybindingService._doDispatch (abstractKeybindingService.js:195)
    at StandaloneKeybindingService.AbstractKeybindingService._dispatch (abstractKeybindingService.js:142)
    at HTMLDivElement.<anonymous> (simpleServices.js:287)

Both worked in Monaco Editor 0.16.2.