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  1. Qt
  2. QTBUG-74712

macOS Mojave 10.14.4: QtQuick windows flicker when activated

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Details

    • macOS

    Description

      After updating to macOS 10.14.4 QtQuick based applications showing/hiding toplevel windows will cause all application windows to flicker.

      This seems to be independent of the GPU (reported on "NVIDIA GeForce GTX 775M", "Intel Iris Plus Graphics 655").

      There a more flicker problems that I've not yet been able to derive a test-case for but it seems all related to GL surface handling. None of this was a problem on 10.14.3.

      The following trivial example demonstrates the effect:

      import QtQuick 2.12
import QtQuick.Window 2.12
import QtQuick.Controls 2.12

Window {
  visible: true
  width: 640
  height: 480
  title: qsTr("Hello World")

  Button {
    text: "Show or Hide"
    onClicked: secondWindow.visible = !secondWindow.visible
  }

  Window {
    id: secondWindow
    width: 400
    height: 400
  }
}

      Attachments

        1. flicker.mov
          4.42 MB
        2. qt-auto-flicker.mov
          2.07 MB
        3. memleak.mp4
          3.72 MB
        4. image-2019-07-15-12-32-04-673.png
          image-2019-07-15-12-32-04-673.png
          710 kB

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-75268 macOS Mojave 10.14.4: QtQuick windows still flicker

          • Not Evaluated - Not yet evaluated/prioritized
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTCREATORBUG-22267 Entire UI flashing

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed
          resulted in

          Bug - A problem which impairs or prevents the functions of the product. AUTOSUITE-923 Strong flickering on the whole UI on MacOS 10.14.4 would require a release with Qt 5.12.3

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed
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            People

              sorvig Morten Sørvig
              njeisecke Nils Jeisecke
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              Dates

                Created:
                Updated:
                Resolved:

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