Fix NPE when serializing UpdateSubChunkBlocksPacket - #6331
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onebeastchris
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Apr 27, 2026
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Pull request overview
This PR fixes a null pointer exception when sending Bedrock UpdateSubChunkBlocksPacket updates by ensuring the packet’s base sub-chunk position is always set before serialization.
Changes:
- Initialize
UpdateSubChunkBlocksPacket’spositionusing the section’s world-block origin derived fromClientboundSectionBlocksUpdatePacketchunk/section coordinates.
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See CloudburstMC/Protocol#333