The bug
When a player is invisible, the crossbow charging animation won't work properly in third-person mode, and will also not be displayed to other players. Also, it is possible that the crossbow animations of another player are copied to that player's crossbow as well.
Video
Comments 2
The issue with the glowing effect is MC-162054 by the way. As we only want to have one issue per ticket, I have removed everything related to that from this ticket.
I'm able to confirm that the crossbow is not animated correctly in third-person mode if the player is invisible. Both for the player itself, and for any other players in view distance.
However, I'm unable to reproduce that 'copying' of one player's crossbow animations to the other player.