Block Limit Fix
Modby tropheusj
Fixes a vanilla bug limiting total Blockstates to ~500k
Type
Mod
CurseForge Downloads
226,584
CurseForge ID
757020
Last Updated
Jun 28, 2026
Description
Block Limit Fix
This mod fixes a vanilla bug that occurs when there's roughly 500k unique Blockstates. When this bug is triggered, a range of issues can occur from ghost blocks to desyncs.
Specifically, beyond 524288 states, the math for serializing the states to packets breaks down due to a misplaced cast. This bug is fixed in 1.19.4 / 1.20, whichever comes first. This mod backports it to older versions.
Thanks to Patbox for debugging this and figuring out the solution.
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