I have been using Ubuntu Touch on my Volla phone for over a week now and encountered some issues with the UI/Launcher thingy. I thought I list them here, maybe they are already getting addressed?
- No support for phones with rounded corners.
- No support for phones with camera notch.
- Lockscreen doesn't work as intended, I suppose to see some text when I tap the circle but it just tries to show the launcher instead.
- The place where you see all the apps is slow and sometimes show duplicates Anbox apps.
Other then this I didn't notice anything big or annoying.
I really like the gesture to open the running apps view and to open the list of apps.
The rounded corners and camera notch issue I fixed by applying this "hax" https://github.com/JamiKettunen/unity8-notch-hax It is not perfect but it did help a lot.
I hope it helps a little reporting on it