Solved: LibreOffice-5.4.3-2 with fix for "Save" issue in Main-testing repo

And then when a wait 180 seconds and then terminate file and attempt to open it again I see this:

and after I let it recover the document I see that my change was not in fact saved. Ergo this version (5.4.3) of LibreOffice is broken for me and at least some other users.