Steps to reproduce: 1. Navigate to an app containing input text element 2. Type in the input text element 3. Enable 'SimulateRealTyping' step property 4. Run the test in MS Edge Log exception: [02-23 16:02:33,ArtOfTest.Runner.exe(6096:4),Error] ExecutionEngine.CatchExecuteStepException() : EXCEPTION! (see below) Outer Exception Type: ArtOfTest.WebAii.Exceptions.ExecuteCommandException Message: ExecuteCommand failed! InError set by the client. Client Error: Unknown error BrowserCommand (Type:'Action',Info:'NotSet',Action:'InvokeJsFunction',Target:'ElementId (tagName: '',occurrenceIndex: '-1')',Data:'document.getElementsByTagName('input')[3].focus()',ClientId:'8c513c4e-1f29-4088-a6d9-23dbbc6c3dbc',HasFrames:'False',FramesInfo:'',TargetFrameIndex:'-1',InError:'True',Response:'Unknown error') InnerException: none. HRESULT: 0x80131500 (Official ID (if app.) = COR_E_EXCEPTION, Error Bit = FAILED, Facility = FACILITY_URT, Code = 5376) Call Stack: at ArtOfTest.WebAii.Core.Browser.ExecuteCommandInternal(BrowserCommand request) at ArtOfTest.WebAii.Core.Browser.ExecuteCommand(BrowserCommand request, Boolean performDomRefresh, Boolean waitUntilReady) at ArtOfTest.WebAii.Core.Actions.InvokeScript(String script, Boolean refreshDom) at ArtOfTest.WebAii.ObjectModel.Element.GetValue[T](String propertyName, T defaultValue) at ArtOfTest.WebAii.ObjectModel.Element.GetValue[T](String propertyName) at ArtOfTest.WebAii.ObjectModel.Element.Focus() at ArtOfTest.WebAii.Controls.HtmlControls.HtmlControl.Focus() at ArtOfTest.WebAii.Design.IntrinsicTranslators.Descriptors.SetTextActionDescriptor.Execute(Browser browser) at ArtOfTest.WebAii.Design.Extensibility.HtmlActionDescriptor.Execute(IAutomationHost autoHost) at ArtOfTest.WebAii.Design.Execution.ExecutionEngine.ExecuteStep(Int32 order)