The same. Auto battle removes any champion with full experience except the party leader. Have been defeated multiple times not realising a player had been removed. 

Same issue with Google Pixel 3, since last update.

Yup multibattle is broke for me to no matter what you. Heck it removes party members

Same problem on iPad Air and iPhone 10x 

I reported the same issue as well. No fix. I even had a moderator come in and say the issue was resolved. Obviously it wasn’t. 

Same problem here. I have wasted energy, multi battle turns and much loot because my team was failing. Please correct. I habe screen shots if needed.

It also does not only happen in multi battle. Have been unable to level, get loot, etc.