There is a task, it is necessary to make an impassable area for players different from the one that was inside the part. That is, if one entered, then he can be there, and others cannot enter.
It would seem to be the simplest task! We make a part of touch, a part of a limiter. And we set group collisions… And… It works every other time.
I made a Part that changes the CollisonGroup with the server after 10 seconds. On the client side, it becomes passable or is blocked after a random time, or does not react at all to the change of the collision group. At the same time, the change of the collision group occurs.
Red part:
CollisionProblem.rbxl (56,6 КБ)
Expected behavior
It is expected that when changing a group, the client will see a change in the collision of Part immediately after the change in the collision group.