Reminder: this version requires Java 17, ensure you update Java as the latest works with old versions, even 1.8. If you want to get larger updates early consider becoming a supporter https://viaversion.com/donate.

Changelog:

• Fixed a regression from 5.0.4 where tags weren't updated correctly (by KennyTV)
  
• Added `hide-scoreboard-numbers` config option to hide scoreboard score numbers in 1.20.2->1.20.3 (by Pablete1234)
• Added `fix-1_21-placement-rotation` config option to fix slightly behind block placement rotation when turning quickly in 1.20.5->1.21. Disabled by default as it may trigger anticheats (by EnZaXD)
• Fixed sound id rewriting in custom item instrument and jukebox data in 1.20.5->1.21 (by KennyTV)
• Fixed bad conversion of can place on/can break in item hover events in 1.20.3->1.20.5 (by EnZaXD)
• Fixed possible errors with entity equipment in 1.20.3->1.20.5 (by EnZaXD)
• Added missing written book component handling in newer protocols for nested item data (by EnZaXD)
• Re-added "Invalid book tag" view in 1.20.4->1.20.5 (by EnZaXD)
• Fixed bossbar issues in 1.8->1.9 (by EnZaXD)
• Improved 1.8->1.9 sound mappings (by RK_01)
• Fixed handling of various non-standard data across protocols (by EnZaXD)

Huge thanks to EnZaXD, RK_01, Pablete1234, KennyTV contributed to this load of bug fixes.