Block Limiter off-by-one fixed — Limits now work correctly. A limit of 4 allows exactly 4 blocks, not 3. This affected all category limits (hoppers, chests, crafting tables, enchanting tables, etc.), custom material limits, and entity placement limits (item frames, paintings).
Block Limiter cache poisoning fixed — Previously, after a denied placement, the count cache could store incorrect values for up to 5 seconds, causing additional false denials. Cache is now properly invalidated on every placement attempt.
Block Limiter deny message now shows accurate count — The message no longer includes the temporarily placed block in its count.
Hologram checksum migration — Items stacked before this update are now automatically migrated to the new checksum format without data loss. Previously, updating could reset stacked items to 1.