Block Limit Fix
Modby tropheusj
Fixes a vanilla bug limiting total Blockstates to ~500k
Type
Mod
CurseForge Downloads
227,584
CurseForge ID
757020
Last Updated
Jul 29, 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.
Recommended Gear
AffiliateHardware and extras that pair well with this mod.
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