I left my (largish) project open in Maia overnight, as I generally do when in the middle of some changes, and when I came back to use it this morning, the first event I actioned (trying to open a class file with Ctrl-N) caused Maia to disappear without warning. When I restarted it, it spent 15 mins rescanning the project, building indices, etc. :-(
I've had this problem previously with earlier builds of v8, but not for some time.
If there is some logging information that might be useful, let me know and I'll send it over.