Bug 458086

Summary: Drag&Drop in Pager applet is very glitchy on multi-screen setup
Product: [Plasma] plasmashell Reporter: ratijas <me>
Component: Pager widgetAssignee: Plasma Bugs List <plasma-bugs>
Status: CONFIRMED ---    
Severity: normal CC: hein, nate
Priority: NOR Keywords: usability
Version: master   
Target Milestone: 1.0   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: Pager drag'n'drop glitches

Description ratijas 2022-08-20 08:39:39 UTC
Created attachment 151440 [details]
Pager drag'n'drop glitches

SUMMARY

Drag&Drop in Pager applet is very glitchy on multi-screen setup.

STEPS TO REPRODUCE
1. Connect two monitors, extend to any side.
2. Open some windows, add Pager applet to any containment if you didn't have one.
3. In the Pager applet, drag any window's outline around.

OBSERVED RESULT

For a brief period of time, the outline that represents a window jumps back and forth between a drag position and original position. Then it proceeds being dragged as normal.

EXPECTED RESULT

Drag & Drop should be smooth.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE: git master
Qt Version: 5.15.5
Kernel Version: 5.18.16-arch1-1 (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i7-6700HQ CPU @ 2.60GHz
Memory: 15.6 GiB of RAM
Graphics Processor: NVIDIA GeForce GTX 970M/PCIe/SSE2
Manufacturer: ASUSTeK COMPUTER INC.
Product Name: G752VT
System Version: 1.0

ADDITIONAL INFORMATION

Second monitor is connected via HDMI, to the right, with their bottom sides aligned.
Laptop: FullHD
HDMI: 4K