When I use the default Block skill of shields, the character makes the movement animation, although it doesn't move. I think this is something what could be improved in the game.
And when I use the block skill continuously the blocking animation refreshes again, and again. Maybe this works how it is intended, but I think it could look better, if it would have a developed continous animation.
I play on Xbox Series X.
Something like Reinhardt's energy shield in Overwatch: