No repeater delay in multiplayer

In single player repeaters have a delay when powering until the signal goes out of it, but when a player joins your game there will be no delay, but torches still have a delay. Even if the player disconnects, there won't be any delay.
You have to go out of the world and go in again to fix it.

This bug sounds ridiculous but it's weird if you have e.g. a clock or a automatic TNT canon.