Running KDE on Wayland with a small HiDPI monitor scaled to 200%. EOS-Welcome is coming up tiny. export GDK_SCALE=2 makes it scale properly. Plasma is configured to let X11 apps scale themselves.
Not sure if this is simply a problem with my config?
Welcome to the forum! 
The welcome app is using yad to implement the GUI parts. Unfortunately yad is currently not working fully with wayland.
So if GDK_SCALE helps with the scaling issue, you can write a simple welcome wrapper file into /usr/local/bin/welcome and make it executable with these commands:
su # get root permissions
cd /usr/local/bin # go to the correct folder
echo 'GDK_SCALE=2 /usr/bin/eos-welcome "$@"' > welcome
chmod +x welcome
ln -s welcome eos-welcome # create also new eos-welcome
exit
This should work, but please note that I didn’t test this fully, so it may contain bugs…
Thanks for the reply. After a reboot and an update to Plasma 5.27-1 it’s too big! So I had to remove the env variable.
I suspect I was unknowingly caught up in this mess.
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OK, nice that you got it solved! 
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