Jamanra phase 2 invisible bug

Since the patch this morning, when I do a copper citadel, once Jamanra goes into phase 2 (after he chops the train with his sword and you fall off), both he and I are not visilble on the screen anymore.

I can sort of estimate where I'm at just by the center of the screen, but I almost lost the run due to running through a tornado+lightning when I couldn't exaclty estimate where I was.

This happened 3 out of 3 times so far this afternoon. EDIT 4/4

ya its everyone
i just thought i was doing well

yes
even thought something wrong with my files

Same here 2/2 so far

This is my first time playing through and i wasn't sure if it was a bug or not, but guess it is. Now I gotta try to beat the boss on hardmode...

Edit: I give up... fix your game, im moving on
Bug Report ID: #4137630463

jup same thing happened to me and a friend of mine

edit : it's not only citadel, it happens in act 2 fight aswell...

so purely jamanra bugged and not something to do with citadel itself

Same with me

Same. PLEASE FIX!!!

Just encountered the same bug. both boss and I turned invisible, but my minions kept attacking him.