I’ve got this issue
as you can see the text overlaps when I switch font size, type, typographi etc. Wich is manageable, but very annoying.
I’ve looked through my settings, and tried a few things, I’ve disabled my theme, to see if that was it, long story short I’m out of ideas, so hopefully one of you guys knows the answer to this 
thx in advance
I’ve got the same problem on a fully updated Ubuntu 16.04. Deleting all of the LibreOffice settings folders makes the problem go away for a few minutes, but then it returns. I’m also seeing the problem on the open/save dialog for LibreOffice. Other applications do not appear to be affected.
I saw the same issue (running Manjaro i3), but changing my system theme actually worked. I was using Vertex Maia Dark and changed to Breadth Dark. Fortunately, I prefer this last one. If I switch back to Vertex, dark or other variants, the problem comes back, so I believe it’s something related to how the system theme is applied within LibreOffice.