Any way to tell what audio bus you're routing a track output to? (Aside from right-clicking on the track and selecting Output?)
Good question!
It was already a bit dicey in Vegas 14, but at least it was visible. Unless your cursor hovered over it, then it changed to Esperanto:
If it is important for you to see the current bus in the track header, then I would suggest selecting the hamburger menu for any of the audio tracks, select "Edit Visible Button Set..." and select "Output Bus". This will put the output bus button back on the header for you.
As far as the corrupted tooltip, this bug has plagued us for a number of years and a fix for us had eluded us until just recently. A fix for the tooltip will be in a forthcoming update.