5.12.1

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)

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