Alley of Blood - UI disappear if menu is open

In addition to a description of the bug you are reporting, please provide:

Device Type: iPad
Device Model: Pro 11
Device Operating System:
Diablo Immortal App Version:

Each time at the beginning of a battle, if I try to open the menu before the start, i lose the UI and need to quit and reboot the game. Cannot check my build to see if i did not forgot something or if gems are active and not dormant…

Not a major bug but really annoying.