The Bug

When a sculk sensor deactivates, the animated parts of the sensor do not have an animation when the sensor changes its state. For example, if they are facing left during the last frames of the active animation, they may be facing right during the first frames of the inactive animation.

How to reproduce

1. Place a sculk sensor
2. Walk next to the sculk sensor to activate it
3. Watch carefully when the sensor changes from its active to inactive state, and notice the behaviour described above

Was previously:
It is hard to catch so you don't have to fix it until 20w60a or something but when a sculk sensor changes from clicking too not clicking it goes back wards when it is going forwards