[konsole] [Bug 462914] New: glitched horizontal lines in text selection @ 150% scale on X11

[ratijas]

https://bugs.kde.org/show_bug.cgi?id=462914

            Bug ID: 462914
           Summary: glitched horizontal lines in text selection @ 150%
                    scale on X11
    Classification: Applications
           Product: konsole
           Version: master
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: konsole-devel at kde.org
          Reporter: me at ratijas.tk
  Target Milestone: ---

Created attachment 154501
  --> https://bugs.kde.org/attachment.cgi?id=154501&action=edit
Konsole @ 150%

SUMMARY

Look at the screenshot: glitched lines appear when slowly dragging mouse for
text selection at 150% global scale on X11.

STEPS TO REPRODUCE
0. Set Global Scale to 150% in System Settings -> Display Configuration, and
reboot.
1. Open Konsole
2. Drag mouse with different speed to select text

OBSERVED RESULT
When dragging slowly enough, glitched horizontal lines appear between lines of
text.

EXPECTED RESULT
Selection regions should be solid without gaps.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: git-master
Qt Version: 5.15.7
Kernel Version: 6.0.11-arch1-1 (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i7-8565U CPU @ 1.80GHz
Memory: 15.3 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics 620
Manufacturer: LENOVO
Product Name: 20QD003CRT
System Version: ThinkPad X1 Carbon 7th

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