When this barrier appears I can't go pass it and I can't break pass it. In order to fix it I leave and come back then it becomes normal, but it always appear somewhere else. This has only appeared on a multiplayer survival world with no cheats. This also happens to an android which I join.
Thank you for your report!
We're actually already tracking this issue at MCPE-38868, so we will resolve and link this ticket as a duplicate.
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