Missing Desktop Effects

Support KDE Plasma
,
9
  • Go to System Settings
  • Type effec
  • Click on Desktop Effects
  • Type wo
  • Verify “Wobbly Windows” is still on as per below screenshot:
    2021-02-12_10-54
    2021-02-12_10-54806×364 37.2 KB

If not, turn it back on.