I'm not quite sure... Every version up to 4.0.5 I suppose? That's the version I first noticed it with, and I upgraded again before posting here. Give me a minute to see if I can figure out how to see what I had before that.
ETA: There's no "previous versions" available, even though I just updated again yesterday. I want to believe I would've been using 4.0.4 because my settings are to notify me of updates, and .4 was released around the time I started using the program regularly (been using it for years, first downloaded in 2008). Sorry for coming unprepared
ETA2: Hm. After going through my screenshots folder ot see if I caught the version in one, seems it WAS working with .5 . Must be something Windows 10 did. Sorry for placing the blame here.