Unreal Engine Issues
Unreal Engine Issues
Montage Editor calls NotifyEnds of AnimNotifyState even when paused
UE - Runtime - Animation - Oct 13, 2023In the Animation Montage Editor, NotifyEnd is unexpectedly called when a time marker is in the middle of an AnimNotifyState and the animation preview gets paused. Because the Animation Montage Edito ...
Launching multiple Editor processes in UE 5.5 can throw warnings due to USD Core plugin initialization
UE - Editor - Content Pipeline - USD - Apr 23, 2025Launching multiple Editor processes at the same time with the USD Core plugin enabled can cause warnings to be logged like the following:LogUsd: Warning: Failed to update LibraryPath for USD plugInf ...
BlendSpace Loop Boundary Produces Inconsistent Sync Marker Data andTriggers an AnimSequence Follower Assertion
UE - Runtime - Animation - Jul 22, 2026Summary In UE 5.7.4, when a looping BlendSpace with Match Sync Phases enabled plays as a SyncGroup Leader and crosses its loop boundary during a transition to an external AnimSequenceFollower in th ...
[CrashReport] UE4Editor_Engine!FAnimCurveBase::SetCurveTypeFlag() [animcurvetypes.cpp:18]
OLD - Anim - Jun 13, 2016This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Access violation - code c0000005 ( ...
Target Rotation of Physics Handle doesn't register and can't be manipulated on tick
UE - Gameplay - May 26, 2016Target Rotation of Physics Handle doesn't register and can't be manipulated on tick User Description: I mentioned some versions before that rotation of Physics Handles is broken and now it is even ...
Static Mesh approximate size can be inconsistent between Content Browser and Static Mesh Editor
Tools - May 3, 2017The approximate size for a Static Mesh that is shown in the tooltip from hovering over a Static Mesh in the Content Browser and the approximate size shown in the Static Mesh Editor can be inconsiste ...
Landscape BP Brushes in WP map causes changelist validation to fail
UE - Graphics Tools - Terrain - Landscape - May 13, 2022Using a Landscape BP brush in a WP map causes SCC validation to fail: [2022.05.13-09.04.47:880][473]SourceControl: Error: Changelist validation failed! [2022.05.13-09.04.47:881][473]SourceControl: ...
UEnhancedInputUserSettings::LoadOrCreateSettings does not handle the changing of a settings class in the editor
UE - Gameplay - Input - Jun 3, 2024proposed fix seems ok to me: UEnhancedInputUserSettings* UEnhancedInputUserSettings::LoadOrCreateSettings(ULocalPlayer* LocalPlayer) { UEnhancedInputUserSettings* Settings = nullptr; ...
HandleKismetEvent (console cmd 'ke'): GT-ALT deadlock when user function flushes async loading
UE - Core - Asset Loader - Apr 8, 2026Context In builds with the in-game console enabled, users can use the ‘ke’ command to execute UFUNCTIONS on any object:ke * MyFunc // run MyFunc() on ANY UObject with a ufunction with that name ke ...
[CrashReport] PhysX3PROFILE_x64!physx::Sc::BodySim::activateInteractions() [scbodysim.cpp:496]
UE - Simulation - Physics - Jul 19, 2017This is a common crash affecting users in 4.16. The callstack is very similar to [Link Removed], which has previously been fixed. User DescriptionsTesting destruction of generated destructables. T ...