Unreal Engine Issues
Unreal Engine Issues
Build crash when enabling r.CreateShadersOnLoad=1
UE - Rendering - Architecture - Shaders - Nov 10, 2025When "r.CreateShadersOnLoad" is enabled, cooking will crash due to failure to create a shader. This occurs on //UE5/Release-5.5, CL: 41545209 and //UE5/Release-5.6, CL: 45232827 ...
Potential wrong branch condition about DFAO and Niagara GPU SDF Collision
UE - Niagara - Mar 6, 2026Particles using Distance Field collision can have their collision controlled by "r.DistanceFieldAO". It appears that the condition in "ShouldPrepareGlobalDistanceField(...)" from DistanceFieldAmbie ...
Setting custom world settings blueprint in project settings causes editor to crash on open
UE - Gameplay - Aug 19, 2015If a blueprint based on a custom World Settings class is set in the project settings then the editor crashes on open ...
Crash in Retarget Manager with Humanoid Rig when trying to re-assign a bone to a node
OLD - Anim - May 26, 2015Crash in the Retarget Manager with Humanoid Rig when trying to re-assign a bone to a node. Happens particularly when there is already a bone selected and you want to select a new one. [Link Remove ...
Variables in other blueprints cannot be accessed in the context menu
UE - Gameplay - Blueprint - Nov 26, 2014A variable in another Blueprint can't be accessed in the context menu from a reference to that Blueprint. ...
Material Parameter Collection does not correctly render in Widget BP
UE - Editor - UI Systems - Feb 23, 2015If a Material Parameter Collection with a Scalar Parameter is used within a material and that material is called within a widget the scalar parameter will render with a 0 value, even when set to ano ...
Duplicated Matinee Actors cause compile errors with Controllers in Level Blueprint
UE - Gameplay - Blueprint - Jan 5, 2015Duplicating a Matinee Actor after having its controller placed in the Level Blueprint and then adding a controller into the Level Blueprint will cause a compile error on compile. *This error will s ...
Dragging a custom event node to event graph that is bound via output pin to an event dispatcher crashes editor
UE - Gameplay - Blueprint - Aug 3, 2016Editor crashes if a custom event function is called after a custom event has been bound to an event dispatcher. However, this only occurs if the event binding occurs from an event delegate by ref ou ...
Sound notify does not play in Persona if Follow is enabled
OLD - Anim - Oct 28, 2016REGRESSION: YesWORKING: 3172292 (4.13.2)BROKEN: 3177600 (4.14) If the user enables the Follow setting on a sound notify, the sound will not be heard in Persona. The sound will still play correctly ...
Overlap events do not trigger on landscapes
UE - LD & Modeling - Terrain - Landscape - Sep 24, 2015Overlap events do not fire on landscapes ...