Since Plasma 6.3.0 the Glide Effect applies to all window classes, including tooltips (e.g. in Task Manager) and menus, which looks strange and ugly, especially at high rotation angle values in the effect settings. STEPS TO REPRODUCE 1. Activate the Glide Effect in System Settings' Desktop Effects page 2. Set Rotation Angle value to e.g. 15 3. Log out and log in (or restart Plasma) 4. Open context menu on the Desktop or in any QtWidgets-based App like Dolphin OBSERVED RESULT The menu will open with a Glide Effect EXPECTED RESULT The menu will open without a Glide Effect SOFTWARE/OS VERSIONS OS: openSUSE Tumbleweed KDE Plasma Version: 6.3.0 KDE Frameworks Version: 6.10 Qt Version: 6.8.2 Session: Wayland
Interestingly, toggling the effect on and off within a single session reverts to the Plasma 6.2.5 behavior, meaning the effect only applies to regular windows with decorations.
It should be fixed in 6.3.1