I am new to this tool. I tried it for OneDrive Biz support on Ubuntu 18.04. It seems as others have mentioned that the client crashes if indexing too many files (around 10k). This happens super quickly for many users, so that kind of sucks
Other then that, I think sync icons on folder explorer is not working either (I do not know if this was implemented?).
Also I cannot make the GUI bigger, which is a bit annoying when browsing folder structure.
Other than that, the sync is actually quite fast. I am fairly happy with it.