Hunter vs Hunter Arena game. My opponent played Dwarven Sharpshooter, then Grizzled Wizard. When the hero powers are swapped, the crosshairs animation from the Sharpshooter is swapped as well (meaning I have it and my opponent doesn’t). However, my hero power can still only hit face (which makes sense). However, the crosshair animation suggested otherwise.
https://us.forums.blizzard.com/en/hearthstone/t/hero-power-animation-swap/20708
It remains even after it returns to the original owner if the Dwarven Sharpshooter has died: https://us.forums.blizzard.com/en/hearthstone/t/dwarven-sharpshooter-grizzled-wizard-visual-bug/20615