[kontact] [Bug 418122] New: Kontact UI in dual-monitor setting

[aleskandro]

https://bugs.kde.org/show_bug.cgi?id=418122

            Bug ID: 418122
           Summary: Kontact UI in dual-monitor setting
           Product: kontact
           Version: unspecified
          Platform: Fedora RPMs
                OS: Linux
            Status: REPORTED
          Severity: major
          Priority: NOR
         Component: mail
          Assignee: kdepim-bugs at kde.org
          Reporter: alessandro.distefano1 at gmail.com
  Target Milestone: ---

Created attachment 126366
  --> https://bugs.kde.org/attachment.cgi?id=126366&action=edit
Example of Kontact Calendar in two hidpi screens configuration

SUMMARY
In my configuration, a fresh installation on Fedora 31, Kontact works well
while in a single hidpi (3200x1800, scale factor 2) monitor setup.

If I attach a second 4k monitor and I try to use Kontact UI in this second
screen (moving it from the first screen or running it directly in that screen),
widgets are not anymore in place: kontact become unusable, if you move mouse
arount its window you can see how actual position of the cursor (the one you
see) can trigger buttons and other items in a "different virtual position".
Despite the cursor layout is absolutely not sorted. I attach a screenshot
Sometimes KMail shows not bad but for sure the WebView to preview mail content
is black and doesn't refresh/show.

STEPS TO REPRODUCE
1. Configure a second 4k screen (not mirroring) 
2. Run kontact
3. Move its window to the second screen or run kontact directly in the second
screen


SOFTWARE/OS VERSIONS
Windows: No 
macOS: No
Linux/KDE Plasma: Fedora 31 (Linux-5.4.17-200.fc31.x86_64) - Intel VGA
(available in About System)
KDE Plasma Version: 5.17.5
KDE Frameworks Version: 5.66.0
Qt Version: 5.13.2

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