When a player with a shield is in a blocking/parrying state and gets hit, his animation switches back to the non-blocking one, even if he's still holding the parry button.

When that happens, the player still has the blocking effect but others can't see it, making it difficult to tell if you can attack someone in pvp situation.

If my explanation is somewhat not-understandable please contact me.
Adittionally I'm adding link to a YouTube video that shows the problem beter than screens or words.

https://youtu.be/9jrT4KsoQu0