Lots of NullPointerException
JIM works fine enough but I have frequent bugs.
One that always occurs is when I open a prototype, I close it and I open another prototype or the same one.
At this time, I get lots of "Widget is disposed" errors and NullPointException into the .metadata/.log file...
It also seems that synchronizing shared prototypes is not properly managed. I have difficulties to discard changes and unlock Screens. Even after a restart of JIM.
I can supply more logs if you want.
I would be surprised to be the only one facing those issues.
Please, do your best to fix all that.