Maybe not a big bug, but in creative if you fly high enough up when looking at invisible bedrock you can go on it far away and when you turn around again too look down at the normal world and go to it you fall down
Linked issues
is duplicated by 5
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Comments 4
Works As Intended. See the comment by @unknown in MCPE-261.
You are free to walk around on the surrounding blocks [of the world border]
That barrier will be removed in 0.9.0 with infinite worlds