While attempting to change out some members of your party, you can see a flicker on your screen. Honkai: Star Rail has numerous glitches, so it didn't pose as unusual to you.

Tapping on Blade's avatar, however... your screen freezes completely. The music stopped, and all you could see was the character selection background, with Blade standing on the right-hand side.

There were no buttons... no menus... nothing you did worked. Your screen remained the same... with Blade staring silently at you through the screen.