Thanks to @manuel , the incompatibility between YAD and Plasma Wayland is fixed.
This resulted in the welcome screen being totally scrambled and was unusable.
Today’s update of eos-bash-shared created a /etc/eos-script-lib-yad.conf.pacnew file.
Be sure to merge the following from the .pacnew file to the eos-script-lib-yad.conf file.
## EOS_UPDATE_PACDIFFER contains the command to run in the end of 'eos-update'.
## If it is not empty, the string is used as-is.
## Example: EOS_UPDATE_PACDIFFER="eos-pacdiff --quiet"
## Default is empty because incorrect usage of pacdiff can break the system in various ways.
#
EOS_UPDATE_PACDIFFER=""
This now makes RPi 4b & RPi 5 running KDE Plasma compatible with Wayland.
All 4 officially supported platforms are compatible with Wayland on Gnome, Cinnamon, and now Plasma.
Thank you manuel
Pudge