Test steps fail in Firefox when SimulateReal options are enabled

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Test Execution
Gadi
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Gadi asked on 16 Jan 2026, 01:18 PM
Hi,

I came across the following issue after Firefox was updated (I assume this might be the cause). I’m currently using Firefox version 147.0 on Windows 10. However, I also encountered this error on the previous Firefox version.

The “Enter text” step (on the login popup) fails when the SimulateRealTyping option is set to true, with the following error:

Failure Information: 
~~~~~~~~~~~~~~~
Wait for condition has timed out
InnerException:
System.TimeoutException: Wait for condition has timed out
   at ArtOfTest.Common.WaitSync.CheckResult(WaitSync wait, String extraExceptionInfo, Object target)
   at ArtOfTest.Common.WaitSync.For[T](Predicate`1 predicate, T target, Boolean invertCondition, Int32 timeout, WaitResultType errorResultType)
   at ArtOfTest.Common.WaitSync.For[T](Predicate`1 predicate, T target, Boolean invertCondition, Int32 timeout)
   at ArtOfTest.WebAii.BrowserSpecialized.Firefox.FireFoxActions.GetContentRectangleF()
   at ArtOfTest.WebAii.ObjectModel.Element.GetRectangle()
   at ArtOfTest.WebAii.Win32.Mouse.ClickElement(Element element, MouseClickType clickType, Point offset, OffsetReference reference)
   at ArtOfTest.WebAii.Controls.HtmlControls.HtmlControl.MouseClick(MouseClickType clickType, Point offset, OffsetReference reference)
   at ArtOfTest.WebAii.Controls.HtmlControls.HtmlControl.MouseClick(MouseClickType clickType)
   at ArtOfTest.WebAii.Controls.HtmlControls.HtmlControl.MouseClick()
   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)

When SimulateRealTyping is set to false, the step passes successfully.

Do you know what might cause this issue? Is there a way to fix or work around it?
In some cases, I need to keep "SimulateReal" options (typing or click) enabled for other browsers.

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Ivaylo
Telerik team
answered on 19 Jan 2026, 09:26 AM

Hello Gadi,

Thank you for reporting this behavior and for providing the detailed error information.

This issue was a known problem related to Firefox. The behavior you described has been addressed and fixed in the latest Test Studio release. We therefore strongly recommend upgrading to the most recent version of Test Studio and re validating the test with Firefox after the upgrade.

You can download the latest Test Studio version from your Progress account download section, and you may also review the release notes for confirmation of fixes and improvements using this link.

I would like to add one additional clarification that is important in this context.
Please note that Test Studio currently provides limited support on Windows 10, as the operating system itself has reached the end of support from Microsoft. According to Microsoft’s official lifecycle policy, Windows 10 reached end of support on October 14, 2025.

As a result, newer browser versions and automation frameworks may start exposing compatibility issues on Windows 10 that cannot always be fully addressed.

You can review Microsoft’s official statement using the following link:
https://learn.microsoft.com/en-us/lifecycle/products/windows-10-home-and-pro

For the most stable and future proof automation experience, we strongly recommend using a fully supported operating system alongside the latest Test Studio version and browser builds.

Regards,
Ivaylo
Progress Telerik

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Gadi
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Ivaylo
Telerik team
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