Utility Core Fixes

v2.3.4 - Vehicle Anti-Cheat Whitelist Mixin Apply Fix

Fix

• Vehicle anti-cheat whitelist mixin failed to apply on 26.2: the 2.3.3 rework redirected isSingleplayerOwner() inside handleMoveVehicle, but also declared a @Shadow for it. In 26.2 that method was moved from ServerGamePacketListenerImpl up to its superclass ServerCommonPacketListenerImpl, and Mixin cannot resolve a @Shadow against an unregistered superclass, so applying the mixin failed with InvalidMixinException: @Shadow method isSingleplayerOwner()Z was not located in the target class and the whitelist was silently disabled at startup.
• Replaced the @Shadow with an @Invoker mixin on ServerCommonPacketListenerImpl (InvokerServerCommonPacketListenerImpl, registered in the server section of utility_core_fixes.mixins.json); the redirect handler now falls back through that invoker. The scoped @Redirect on the single isSingleplayerOwner() call inside handleMoveVehicle is unchanged, so only whitelisted root vehicles skip the moved too quickly check and the other call sites are untouched.

JAR: utility_core_fixes-26.2-neoforge-26.2.0.37-beta-2.3.4.jar