Username: Darkstorm77 Location: Creative Description: If you do /plot biome [Enter Biome Name Here] on your plot in creative it accepts the command but doesn't turn your plot a different biome. If you leave your plot and come back to it, it suddenly changes to the correct biome. Proof: When I typed /plot biome Desert. When I typed /spawn, then came back using /p h.
It's not that big of a deal because it still gave it to you. I don't think it can register it, so you have to relog. Like you said, it's just a delay, not a big deal/bug.
It isn't a bug, its like a skyblock island. In order for it to register, you need to re-enter the plot entirely.