Mojang, there is bug in Minecraft and it is with barriers. When I placed barriers then hovered over the barriers with it still in hand, and created a HUGE barrier(s) in the sky! This bug has been around since like idk when barriers where added? ( I discovered it in 1.16.1 )
Thank you for your report!
We're tracking this issue in MCPE-37260, so this ticket is being resolved and linked as a duplicate.
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