[kde] [Bug 463876] New: QT_XCB_GL_INTEGRATION=xcb_egl causes continuous crashes in plasmashell and krunner

[Guido]

https://bugs.kde.org/show_bug.cgi?id=463876

            Bug ID: 463876
           Summary: QT_XCB_GL_INTEGRATION=xcb_egl causes continuous
                    crashes in plasmashell and krunner
    Classification: I don't know
           Product: kde
           Version: unspecified
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: guido.iodice at gmail.com
  Target Milestone: ---

SUMMARY
***
Trying to use kwin_x11 this EGL (KWIN_OPENGL_INTERFACE=egl) I noticed that
without
QT_XCB_GL_INTEGRATION=xcb_egl kwin_x11 fails to activate compositing. So I
added both env vars to script in ~/.config/plasma-workspace/env/

On reboot, kwin correctly activates compositing and egl, m plasmashell and
krunner are suffering from continuous crashes. Konsole and yakuake also have
problems: often opening them does not display the prompt and the two
applications freeze.

I therefore suspected that the problem was a general one related to
transparencies, but using a decoration with transparency, kwin does not crash.

Starting only kwin and not all plasma with those 2 variables, kwin has no
stability problems and works correctly (compositing with EGL)

***
Operating System: Manjaro Linux
KDE Plasma Version: 5.26.5
KDE Frameworks Version: 5.101.0
Qt Version: 5.15.7
Kernel Version: 6.1.3-1-MANJARO (64-bit)
Graphics Platform: X11
Processors: 8 × 11th Gen Intel® Core™ i5-1135G7 @ 2.40GHz
Memory: 15.4 GiB of RAM
Graphics Processor: Mesa Intel® Xe Graphics
Manufacturer: Dell Inc.
Product Name: Inspiron 5502

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