As everyone should know, shields increase in model size just a little bit when you're actively blocking. This is great, no problem here.
The problem is if you continue moving after unblocking, meaning not standing still at all, you shield will not decrease in size until you stand still. [Easily testable by running against a wall and blocking/unblocking]

Obviously this is an incredibly minor issue, but I figured this wasn't intended and thought it was worth throwing out.