If you open the window LO in full screen mode, and then shut down after CMD + W, then the Mission control is a black screen before the closure of the program (CMD + Q).
BBX: can't confirm on 10.10.3 with Version: 5.1.0.0.alpha1+ Build ID: eb8c323d94bf13d4a373f88c6b932a97701c283b TinderBox: MacOSX-x86_64@49-TDF, Branch:master, Time: 2015-06-05_00:58:41 Locale: de-DE (de.UTF-8) could you try and see if the issue perstis with that version: http://dev-builds.libreoffice.org/daily/master/MacOSX-x86_64@49-TDF/ I'm not saying fullscreen is anywhere near a stable state. there are several issues remaining and LO does not behave as a standard osx app should. but I can not reproduce what you describe. Setting to NEEDINFO until more detail is provided. After providing the requested info, please reset this bug to UNCONFIRMED (should it be persisting) or WORKSFORME (should it be solved with a newer LO version).
No, 5.1.0.0.alpha1 + version has the same problem. I have OS X 10.10.3. I took a video to explain in more detail what I mean: https://www.dropbox.com/s/bum3letbi0467a1/video.mp4?dl=0
If I type Cmd+Q from fullscreen mode, then I get a black screen, a screwed Mission Control / Spaces, and a hung LO app whose icon remains in the Dock. This then led to a complete inability to remove the app from the Dock, even through forcing Dock restart or Finder restart from the command line. In the end, I had to force reboot the machine. Confirming Tested on my own master build from 07/06/15
*** This bug has been marked as a duplicate of bug 83378 ***