[konsole] [Bug 488530] New: Background flickers between transparent and non-transparent

[Freddie Witherden]

https://bugs.kde.org/show_bug.cgi?id=488530

            Bug ID: 488530
           Summary: Background flickers between transparent and
                    non-transparent
    Classification: Applications
           Product: konsole
           Version: 24.05.1
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: konsole-devel at kde.org
          Reporter: freddie at witherden.org
  Target Milestone: ---

Created attachment 170519
  --> https://bugs.kde.org/attachment.cgi?id=170519&action=edit
Video showing the effect.

On a Gentoo ~AMD64 X11 system under Qt 6.7.1 and KDE frameworks 6.3.0 the
background in Konsole flickers between being transparent and non-transparent as
the window redraws.  (This can include new text being drawn or just mousing
over a widget on the tab bar.)

This appears to be a regression as the functionality worked fine under KDE
Frameworks 5 (I noticed upon upgrading).  Am using an Intel GPU with a 6.9
kernel and the latest Mesa release.

Reproduce: under an X11 session open Konsole.  Go Settings -> Edit Current
Profile -> Appearance -> Edit [Yuck!] -> Set "Background colour transparency"
to a reasonable number.  Then Apply and interact with the session.

Screencast taken with Spectale attached.

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