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  1. Qt
  2. QTBUG-82419

Qt Dialog related crash after repeated MS remote desktop connections into host

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    • Icon: Bug Bug
    • Resolution: Unresolved
    • Icon: P1: Critical P1: Critical
    • None
    • 5.13.2
    • None
    • Windows

      This bug report is referring to the "Mudlet" application (https://github.com/Mudlet/Mudlet) which is based on Desktop Qt 5.13.2 MinGW 32-bit.

      After repeatedly using various Microsoft Remote Desktop clients to connect to a Windows computer running the Qt application Mudlet, Mudlet crashes when opening or scrolling within the Triggers window (I believe the triggers window may involve widgets/dialog, see stack trace screenshot)

      Steps to reproduce the issue:

      1. Start Mudlet on Windows desktop
      2. Connect to a game, open the triggers window, scroll up/down
      3. RDP from client into Windows desktop
      4. Open triggers window, scroll up/down
      5. Return to Windows desktop and login at console
      6. Open triggers window, scroll up/down

      Using a vanilla profile it took me several iterations of the above to cause a crash. On a profile I have been using awhile it happens almost always immediately after the first RDP connection.

      Screenshots of the crash in the debugger (running Mudlet 4.4.0) are attached.  Includes stack trace.

      This issue has been raised with the Mudlet team who referred me to the Qt project after reviewing the stack trace.   https://github.com/Mudlet/Mudlet/issues/3357

       

        1. Mudlet1.PNG
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        2. Mudlet2.PNG
          Mudlet2.PNG
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        3. trace2.txt
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        4. qwidgetbackingstore-screenshot.PNG
          qwidgetbackingstore-screenshot.PNG
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            qt.team.quick.subscriptions Qt Quick and Widgets Team
            mrocke M R
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