If you teleport an EnderCrystal using, for example, "/tp @e[type=EnderCrystal] ~ ~1 ~", nothing visually happens, but if you relog, the EnderCrystal has teleported. It's a similar issue to the one I last reported.
Linked issues
Comments 3
Duplicate of MC-44654
Please do not mark unreleased versions (anything starting with "Future Version") as affected. You don't know if it will be a problem in the future.