I have just updated my JUPITER-X OS to 3.01 as well the editor (Build number 369).
Note:I am running Mac OS Big Sur.
I have noticed that the Jupiter-X model editor does not fit nicely in the editor's window. Yes, there are scrollbars on the right/bottom sides of the window and I can access all the parameters. However, I think it would be nicer if it would fill the active window nicely as the other model editors do.