I have a skyblock world which has behaviour and resource packs, in total like ~10k files.
And when I try to open that world I get the "disconnectionScreen.unexpectedPacket" popup message 80% of the time, other 20% I can join. Sometimes this message occurs when I use /tp command. This recently started to happen, maybe it's some sort of bug related to a new update/bug fix.
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Thank you for your report!
We're tracking this issue in MCPE-141914, so this ticket is being resolved and linked as a duplicate.
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