I would hardly call that "basic functionality." I've been using LO as my primary office suite through several schools and jobs, and never felt like it was broken.
I use LO daily under Linux to produce handouts, simple screen based materials and spreadsheet models for teaching. My colleagues are blissfully ignorant of the fact that the materials they sometimes use where not produced in MS Office on Windows.
I would really like a stable interface for creating interactive materials, but I'd settle for being able to export a full range of hyperlinked objects in Impress as a pdf file so that the hyperlinks work. That would get me 95% of where I would like to be.
For instance, custom motion paths seem to come and go at whim (still not fixed in 5.3, and as this bug shows has been a recurring problem)
https://bugs.documentfoundation.org/show_bug.cgi?id=76916
It's hard to rely on it when basic functionality constantly breaks.