Coloseum bug

https://forums.ea.com/blog/swgoh-game-info-hub-en/known-issue-4-29/13369522

same here

I and all the guild members are experiencing the same problem.

Same here

Same issue here.

I am also having the exact same issue, stuck with the Dryax at 37% and no matter how many times I damage it nothing happens

Same, 37%...

Same

Here's a visual 

Same have to quit game coz stuck on 30%