Artifacting on Alt+Tab in certain applications (e.g Kate)

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On Plasma 6 with an AMD 7800 XT, I’ve noticed some minor artifacting when switching windows with Alt+Tab to Kate or KWrite. Specifically, parts of the previous application’s content (like Firefox or Minecraft) - remain visible as faint lines inside the Kate/KWrite window until the window is resized or moved, which triggers a repaint.

Some more information:

  • OS: Fedora Linux 42
  • KDE Plasma Version: 6.4.3
  • KDE Framework Version: 6.16.0
  • QT Version: 6.9.1
  • Graphic Platform: Wayland
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Update: I figured out that the artifacting is caused by having a fractional scaling value of 115%, I changed it to 110% and it seems to be fixed.

Is this a bug?