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  1. Qt
  2. QTBUG-140420

Wayland Touch Signal Loss Issue

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      Hi Shawn, the patch you provided has been merged into the project. However, during testing, the issue persists as demonstrated in the video test steps below:

      e4b9984de47ea37ba5e045667c0b74b6.mp4

      After approximately three minutes of continuous testing, the same error reoccurred, as shown in the image below:

      Additionally, the client has now identified another issue: when users perform a single-finger drag (rather than a multi-finger swipe gesture to pop up the Popup), this error may still occur with a certain probability, as shown in the image below:

        1. touchDemo.zip
          1.45 MB
        2. 3c513601494c52ea6cfbee8c2d4338c8.mp4
          2.75 MB
        3. Weixin Image_20250912111504.png
          Weixin Image_20250912111504.png
          22 kB
        4. 0001-setGrabberItem-call-touchUngrabEvent-if-current-even.patch
          2 kB
        5. e4b9984de47ea37ba5e045667c0b74b6.mp4
          1.18 MB
        6. image-2025-09-26-22-53-45-991.png
          image-2025-09-26-22-53-45-991.png
          22 kB
        7. image-2025-09-26-22-53-55-046.png
          image-2025-09-26-22-53-55-046.png
          413 kB
        8. e4b9984de47ea37ba5e045667c0b74b6-1.mp4
          1.18 MB
        9. Weixin Image_20250926222825.png
          Weixin Image_20250926222825.png
          22 kB
        10. Weixin Image_20250926222832.png
          Weixin Image_20250926222832.png
          413 kB
        11. 0002-QQuickPointerTouchEvent-reset-clear-unused-stored-to.patch
          4 kB
        For Gerrit Dashboard: QTBUG-140420
        # Subject Branch Project Status CR V
        680865,3 setGrabberItem: call touchUngrabEvent if current event is touch tqtc/esm-5.15 qt/tqtc-qtdeclarative Status: NEW 0 0
        680866,1 If TouchPoint missing release detected, cancel touch->mouse synthesis tqtc/esm-5.15 qt/tqtc-qtdeclarative Status: NEW 0 0
        680906,3 QQuickPointerTouchEvent::reset: clear unused stored touchpoints tqtc/esm-5.15 qt/tqtc-qtdeclarative Status: NEW 0 0

            qt.team.quick.subscriptions Qt Quick and Widgets Team
            josh_zheng Josh Zheng
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              Created:
              Updated: