WWAHost.exe crashes when opening a drop-down (select) menu

Fixed, flighted Issue #9529349


Christian L.
Oct 26, 2016
This issue is public.
Found in
  • Internet Explorer
Found in build #
Reported by 6 people

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Steps to reproduce

 WWAHost.exe!WebRuntimeCoreControl::ShowCustomSelectionUI Line 1833 C++
  WWAHost.exe!WebInstanceRuntimeCoreAdapter::ShowCustomSelectionUI Line 1406 C++
  mshtml.dll!CWebPlatformTridentHost::ShowCustomSelectionUI Line 5509 C++
  mshtml.dll!CDoc::ShowCustomSelectionUI Line 1321 C++

My web app (Windows Phone 8.1, JavaScript project) which was previously deployed to Windows Phone 8.1 and Windows 10 Mobile crashes on version 10.0.14393.321. If you try to open a drop-down menu (plain select element), the app immediately crashes. This works on Windows Phone 8.1 and earlier builds of Windows 10 Mobile.

  1. Deploy the app attached.
  2. Tap the drop-down menu/select element.
  3. The app crashes.

When enabling native debugging, I get the following unhandled exception: Exception thrown at 0x00A374D9 in WWAHost.exe: 0xC0000005: Access violation reading location 0x00000000.


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