Spoiler Thread: Avengers Infinity War

Scorpius said
If he used the time stone to reverse the damage from the axe then it would have reversed the damaged to the gauntlet and himself as well.

TheRealJRad said
Maybe he’s able to focus it more locally? (Just spitballing)

Just re-watched (such a great movie) - after Wanda blew up the Mind Stone, Thanos only rolled back what happened to Vision. Wanda was just feet away and didn't rewind, so he can definitely localize it.