Minecraft Username: boston81

Brief Description: I used the mining worlds warp 15 sign and did /fly and it allowed me to fly in the mining world without purchasing fly+.

Instructions: Go to mining world > type /fly > you can fly

How many times did you recreate this bug?: 4 times

Result: Able to fly without fly+

Expected Result: To not be able to fly

Evidence: I can post a video or screenshots if needed;