No, this doesn't seem to be an OS-related issue but an add-on related issue that shouldn't have affected the functionality. We didn't upgrade anything yet although there is talk about the next version, etc. but I really don't see any benefits. I'm considering getting rid of some of the additional buttons - and Google+ has to be retired too. All this and more shall be done this week...
As to sandboxing OSes, lol. I'm used to the Windows dread (and IE... don't even go there!!!) Believer it or not, before I was on the web I was in Macworld Magazine for running another site. I was a big Mac person until they changed back to proprietary and went for appearance over performance for a while. Anyway...