Lost a ranked game because when I tried to Sheltered by ghosts targetting an opponent sheltered attached to a creature with few sheltered attached to it that had other few sheltered exiled under them and I couldn't see and target the one I wanted because when I tried to choose it didn't show me the cards but just their name and when I tried to click it didn't do anything until it targeted something that I didn't want to.

I think its a display problem when a sheltered tries to target an another sheltered but that creature has too many sheltered attached to it that exiled others sheltered. In the end the battlefield bugged too.