Casting animations won't stop

For the first time I decided to make a ranged toon, trying different ones I noticed that their arms don’t go back to normal after casting and they just kinda hold em up and do that weird booty shaking thing (draenei) until I cast something else or move. This is seriously bugging me! Has it always been this way? Can I make it stop? I just want to look normal after the cast is done.

That’s enough Jan, quiet down