It keeps crashing on MAC no matter what I do. It crashes while I am drawing, copying, inserting etc. After 5 minutes, it's impossible to have it running.
It could be interesting you attach debug info in a file. As a simple contributor of LibreOffice, I would quote a link of it: https://wiki.documentfoundation.org/BugReport#How_to_get_debug_information_on_Mac_OS_X
You seem to have CSS turned off.
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I absolutely cannot reproduce this. I use it on Mac everyday, naturally. Can you give us a screenshot? Can you give us more information on your system? Yes, a backtrace as indicated above would be wonderful.
Also, there are nightly builds to try: