Lithium 0.26.3 for Minecraft 26.3.x fixes several issues.
Make sure to take a backup of your world before using the mod and please report any bugs and mod compatibility issues at the issue tracker. You can check the description of each optimization and how to disable it when encountering a problem.
Fixes
- Avoid caching chest inventories when the corresponding block state is a chest half
- Fix removed player memory leak in MapItemSavedData when maps are in item frames. Also avoid sending unnecessary map data packets
- Fix entity step up movement collision not including hard entities