Well, I guess I am reopening this topic, as the same issue is back, and has actually gotten worse.
Now the hot links in tab titles (that are created as you drill down) do not respond to mouse clicks either. The only way I can reset the view is to pick different custom view, and then reselect the one I want. I can drill down for as long as there are lower levels, but for whatever level I stop at, I cannot go back up without resetting as described above... frustrating.
If I change views enough times, the back button sometimes begins to work again, but only sporadically. Even if this did work consistently, it really is not a viable way to use the program. The back button is something I use a lot.
Anyone with a potential fix would be most welcome. FYI... I have version 17.0.180 installed, but this has been a problem since installing MC17.