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Name Modified Size InfoDownloads / Week
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5.12.1 source code.tar.gz 2026-10-08 1.0 MB
5.12.1 source code.zip 2026-10-08 2.4 MB
README.md 2026-10-08 2.1 kB
ViaVersion-5.12.1.jar 2026-10-08 6.5 MB
Totals: 4 Items   9.9 MB 10
  • Fixed entity movement interpolation in 26.2->26.3 - note that the client itself has its own interpolation issues (by roccodev)
  • Fixed brewing stand slots not accepting items on Vanilla servers in 26.2->26.3 (by EnZaXD)
  • Fixed a few unhandled custom registry data handling in 26.2->26.3 and other protocols (by kennytv & EnZaXD)
  • Fixed splash potion sounds not playing in 26.2->26.3 (by EnZaXD)
  • Fixed missing empty swing animations in 26.2->26.3 (by EnZaXD)
  • Fixed a bunch of partial item hashing issues for 1.21.5+ clients, including consumable animations, default-count item templates and sulfur cube content (by EnZaXD)
  • Fixed inventory desyncs from attribute modifier conversion using random ids in 1.20.5->1.21 (by EnZaXD)
  • Fixed end credits being shown again every time 1.21+ clients use the exit portal on older servers (by Dainsleif)
  • Fixed a few client-side interactions and events from missing tags across protocols
  • The vv:proxy_details Velocity payload now reports the original client version instead of the intermediate one (by chico ferreira)

Minor/creative mode backup/legacy fixes:

  • Axes no longer strip logs on <1.13 servers and shovels no longer create dirt paths on 1.8 servers for 26.3 clients (by EnZaXD)
  • Fixed hide_additional_tooltip matching of removed data components in 1.21.4->1.21.5 (by EnZaXD)
  • Fixed shield bypassed_by tag key creative mode backup in 1.21.11->26.1 (by EnZaXD)
  • Fixed bees not spawning from bee nests placed after creative mode in 1.21.7->1.21.9 (by EnZaXD)
  • Fixed handling of removal markers in villager trades in 1.20.3->1.20.5 (by Polang)
  • Fixed nested item markers leaking into custom data in 1.20.3->1.20.5 (by EnZaXD)
  • Fixed handling of written books with invalid filtered pages in 1.20.2->1.20.3 (by EnZaXD)
  • Fixed ender dragons flapping their wings way too fast due to the wrong dragon phase in 1.8->1.9 (by LeonTG)

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.

Source: README.md, updated 2026-10-08