>>306644976
No that's perfectly normal. PC keeps the headset hot so that when you put it on lenses don't fog up because of temp difference

I literally leave my headset connected 24/7 and restart my pc once a week at most and slept several times in VR with the headset on so no your controllers should have not broken because of that. 

If by drifting you mean your thumbstick drifts that might have been cause by you clicking it in games. It's very sensible. In any case try doing >>306644691 and redoing oculus setup if it's a tracking issue

If that doesn't fix it contact support even if you're out of warranty. They offered to replace mine even though I was already out of warranty