After experiencing some problem in Garuda Welcome App, Settings tab as described here, and investigating things, it turns out that the initial setup of the Wayfire DE may not be complete.
At least that is my view because of the following:
in /usr/share/garudawelcome/scripts/ there is a script gdmwayland-on.sh that has never run on my system. I would expect this to have run during setup.
I will run this script manually now and see what will happen...