Thanks for this, I was wondering but not enough to go on a search... All things come to those who wait lol!
Phosh (Wayland) display scaling from the system menu doesn't persist after a reboot — yet.
This guide worked:
https://forum.tuxdigital.com/t/phosh-how-to-permanently-set-display-scaling/5462
Scaling at 150% (1.5) feels better than at 200% (2).
Discussion
Haha, yes. Hopefully not too long the setting will save from the GUI and some of the scaling issues (like the keyboard scaling) will be resolved. There is probably an issue tracking it already. I contacted support to see the status.
Feedback (to support) was forwarded to engineers working on Phosh. 🌞