Hello, I just found a simple way to crash the ide hard.
Version 1.2.73
(181bfb10b315d75960210b4b19d13379a154a518)
Java 1.8.0_05
Even if the reproducing steps seems strange, the bug happened twice to me on regular usage.
The crash is annoying because the ide don’t recover its state. I have to re-login with my google account, and re-open my project.
When it crash, I see this osx message:
When I reopen the editor, I see a warning in the
The bug seems to be a bit worse: unfolding one single selected element is sometimes enough to trigger the crash
Thanks for the report. I was unable to repro exactly like you did it but got a crash with a little bit of extra keypresses.
Added Jira ticket: DEF-1599
Oops… me too… 
Lol, ok, delete mine then!
Närå… Din får vara kvar… 
Re “also, is this normal?”:
Could it be that those four selected objects have different X coordinates? If so, the editor will not show any of them, in order to emphasize the ambiguity.
Yes, I believe that is why the field shows empty.
