5.12.2

• Fixed errors from new block states or block state properties in registry data across versions
• Poplar leaves are now mapped to varied leaves in 26.3->26.2 (by mfishma)
• Fixed item atlas text components in 1.21.11->1.21.9 (by EnZaXD)
• Fixed handling of experimental minecart velocity in 1.21.1->1.21
• Fixed enchantment rewriting in 1.19->1.18.2 (by EnZaXD)

Minor/legacy/creative mode item data backup fixes:

• Fixed 26.3 map decoration creative mode backup (by mfishma)
• Fixed missing creative mode backups in 1.21.2->1.21 (by EnZaXD)
• Fixed lossy map id creative mode backup in 1.13->1.12 (by roccodev)
• Fixed some niche data handling errors in older protocol (by EnZaXD)

If you want to get larger version updates early, consider supporting me via https://viaversion.com/donate. See the previous update notes for more info.