Unreal Engine Issues
Unreal Engine Issues
[CrashReport] UE4Editor_UnrealEd!UEditorEngine::CheckForWorldGCLeaks()
UE - Foundation - Core - UObject - Jun 29, 2017This is a common crash occurring for users in 4.16. It is spread out among around 60 different CrashGroups in CrashReporter, because every case has a slightly different callstack. This appears to ...
Editor crash when using Animation BP pose watch
OLD - Anim - Apr 7, 2020We encountered a crash when using Anim BP Pose Watches to inspect poses on actors in a PIE instance. Specifically it seems ending the PIE session while the Anim BP is still watching the actor in the ...
YCoCg to sRGB?
UE - Niagara - Rendering - Mar 20, 2024Both the material and the Niagara compute shader use the same function to interpret the YCoCg color data, but the Niagara compute shader returns an incorrect color. Also found on CL: 32347737 in Re ...
Crash when changing r.MaterialQualityLevel when FastGeo plugin enabled in cooked build
UE - World Creation - Worldbuilding Tools - Sep 5, 2025The engine crashes when the r.MaterialQualityLevel is changed in a cooked game that uses the FastGeo Streaming Plugin. The crash doesn't repro with the same steps in Editor, just in a cooked build. ...
AI Pawn Sensing component cannot see and hear at the same time
UE - AI - Mar 12, 2015Hear events are never fired while See events are fired. They are mutually exclusive, with See events taking priority if both happen. ...
Using "Play Animation" node, if current animation has a looping timed particle it will continue playing
OLD - Anim - Jun 24, 2016Calling "Play Animation", if current animation has a looping timed particle it will continue playing ...
Cursor Overlap events don't work on characters
UE - Gameplay - Sep 4, 2015Setting up mouse over events for a character do not trigger. ...
Editing a blueprint from a hidden streamed level can reset all actor transforms
UE - Gameplay - Blueprint - Jul 9, 2015When editing an actor blueprint that's inside of a hidden streamed level, the blueprint actor transform will reset to 0,0,0. There is a video that's attached to the AnswerHub post which is very use ...
FOV only Camera anim is not working as intended.
UE - Gameplay - Feb 6, 2018FOV-track-only camera anim do not give effect to current camera. if the anim have transform track without any key, the anim works. Regression? yes. This is not reproduced in 4.13.2 launcher version ...
LevelEditor: "Replace Actor" marks level as dirty even when using external actors
UE - World Creation - Worldbuilding Tools - Jul 15, 2024When using external actors, adding/removing/replacing/editing an actor instance inside a level does not cause any modification to the Level package, which helps reduce contention for the map file on ...