Person 1 is currently working on that file. Person 2 opens the file and joins. Immediately, Person 1 is kicked off of the file and shows disconnected with the loading bar shown. If Person 1 force closes the app altogether and reopens the file, Person 2 is kicked off of the file. It goes back and forth like this.
We have several files shared between the design team and only this one specific file seems to do this.