The first time you join a server, if you get knocked over quickly, you might see some bugs when you fall and get up. (It only works on the first time you fall so it was painful to get the screenshots.) There are 3 different possibilities I saw.

1: You instantly fall down without a falling animation and when you are supposed to get up you snap into the standing position.

2: You fall down regularly, but when you are supposed to get up your hat stands up (left-hand picture) with an animation but the rest of your body waits for it to finish and then snaps into the standing position.

3: You fall down regularly, but when you are supposed to get up your weapon stands up (right-hand picture) with an animation but the rest of your body waits for it to finish and then snaps into the standing position.

2SPOOKY4ME