[kde] [Bug 468320] New: KDE not regrouping programs in the task bar as it was doing before + fast flicker of the apps in taskbar :(

[voxel]

https://bugs.kde.org/show_bug.cgi?id=468320

            Bug ID: 468320
           Summary: KDE not regrouping programs in the task bar as it was
                    doing before + fast flicker of the apps in taskbar :(
    Classification: I don't know
           Product: kde
           Version: unspecified
          Platform: Mageia RPMs
                OS: Linux
            Status: REPORTED
          Severity: grave
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: jfbachelet at free.fr
  Target Milestone: ---

SUMMARY


Description of problem:

I see a problem with KDE, when multiple instances of programs are used it had
the habit to regroup automatically all instances under one unique 'menu' in the
taskbar, using for this the 'authorize program regroupment' option in the 'more
actions' submenu...

btw, since some updates (can't remember which, sorry) of the graphics system,
that regroupment isn't automatic anymore there, althouth the option is ticked.
I have to manualy untick then retick the option to see it happen but that's not
stable and works only for the screen I set it on (I'm using two monitors and
two screens there)

instead, when room is tight in the taskbar (begining with 4 open apps/dolphins)
I see attempts to regroup then immediate release of it then re-attempts etc...
or just fast 'flicking' of items without any attemps to regroup it... resulting
in a somewhat very eye tearing fast 'flicking' of items in the taskbar.

that flicker phenomenon appear to just be on the secondary screen here, don't
know why ??? 

Version-Release number of selected component (if applicable):
Kernel desktop v 5.15.98-1.mga8

How reproducible:
setup un two screens/monitors system like me and fill it with multiple
instances of Dolphin and other programs and see what happens.

Steps to Reproduce:
1.two identical monitors (27 pouces here)
2.two identicals desktops (1920*1080*32 here)
3.one full 'default' taskbar on each monitor
4. lostsa dolphin instances (working with 3 to 4 of it here sometimes more) and
some other opened software
5. after a while the bug will show up

OBSERVED RESULT
fast flicking of the apps bar in the taskbar, very tiring for the eyes and
almost continuous, If I force a regroupment by untick/tick the option, after a
little while the regroupment is released again and flicking happens...

EXPECTED RESULT


SOFTWARE/OS VERSIONS
Mageia Linux v8.1 all latests updates installed
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version:  5.20.4
KDE Frameworks Version:  5.76.0
Qt Version: 5.15.2

ADDITIONAL INFORMATION

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