[kde] [Bug 478612] New: Firefox tabs do not maximize properly in dual monitor configuration with different panels location

[bugzilla_noreply at kde.org]

https://bugs.kde.org/show_bug.cgi?id=478612

            Bug ID: 478612
           Summary: Firefox tabs do not maximize properly in dual monitor
                    configuration with different panels location
    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: k86gdz4ezhsd5b at outlook.com
  Target Milestone: ---

SUMMARY
When Firefox is maximized and you have panels in different places with multiple
monitors, dragging a Firefox tab to your other monitor does not properly
place/maximize the new Firefox window.

STEPS TO REPRODUCE
(prerequisite) Have a Plasma panel on one monitor set somewhere (example :
bottom)
(prerequisite) Set a panel on another monitor set elsewhere, different from the
panel in the first monitor (example : left)
1. Open firefox and make it maximized
2. Open 2 tabs in firefox
3. Click on a tab, drag it out of the firefox window (does not matter if you
drag it from main screen to secondary screen or secondary screen to main)

OBSERVED RESULT
Tab is moved to other screen but the space where the panel should is located
from the originating screen is not used.

EXPECTED RESULT
Tab is moved to other screen and is fully maximized


SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora 39 
KDE Plasma Version: 5.27.9
KDE Frameworks Version: 5.111.0
Qt Version: 5.15.11

ADDITIONAL INFORMATION
-Panel size affects the bug
-Bug also happens on Opensuse, it's probably not distro related. 
-Bug does not happen on Windows, it works as expected there.
-Having more than 2 panels on a screen affects the bug (if you have 4 panels on
top/left/right/bottom and follow the steps, then the new Firefox window will be
reduced by the size of all panels on each side.
-I could not find any other application with a similar tab-dragging behavior to
test.

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