[ubuntu] Libreoffice 5 just deleted my disk-saved file upon crashing!

I've been using LibreOffice 5 for work, and it keeps crashing on me, so, I've been saving constantly (every time I finish more stuff), only this time when it crashed, it erased my saved-to-disk file as well as memory contents.

This was a work file, very expensive, and too new to make it to backups.

I've never had a program do that before, not even in M$. Wow! How evil is that?

I looked for my intact file even in bash, and could not find it. It has been erased by LibreOffice.

How is this not a virus?

I am done with that gar-raw-badge!

Any recommendations that work?

David