Beep,
The selection glitch seems to be identical on my old project before and after the upgrade on a project that had the problem to start with.
I don't know if it would be possible to cause the problem in a new project now in X3 or not... but an upgraded project that had the problem still showed the same evidence.
IMHO, the behavior was identical to X2.
Regarding the tempo adjusted tune, honestly, if I didn't know which one I was listening to, I might not know it had been adjusted, and I've listened to the tune A LOT.