Unreal Engine Issues
Unreal Engine Issues
Editor crashes if Sequencer has keyframes for a variable that has changed
UE - Anim - Sequencer - Sep 19, 2018The Editor crashes if loaded sequence has keyframes for an actor variable that has been changed, instead of soft erroring out. This was reported and tested on 4.20.3 (CL-4369336). It was reproduced ...
Editor Crash When DFAO Viewport Has Zero Area
UE - Graphics Features - Apr 19, 2018I've reproduced this crash in 4.16, 4.17, 4.18, 4.19, and Main. Per licensee: The editor crashes if distance field ambient occlusion is enabled and a viewport is resized to have zero height. Th ...
Material Ambient Occlusion Does Not Work With Skylight Set to Movable
UE - Graphics Features - Jul 27, 2018Material ambient occlusion does not work with the skylight set to movable. Setting the material to allow static lighting will fix the issue until the level is reloaded. Found in 4.19 CL# 4033788, 4 ...
Creating SplineMeshComponents along Spline causes crash
Tools - Aug 22, 2018Attempting to procedurally create SplineMeshComponents along the spline of a SplineComponent via a derived SplineComponent class's constructor causes the project to crash. It runs into an ensure mes ...
Ensure when pasting copied nodes into an Object
UE - Gameplay - Aug 7, 2018When copy and pasting nodes from an Actor Blueprint to an Object Blueprint the Editor stalls for a bit and an ensure occurs. This issue was reported and tested in 4.19.2 (CL-4033788). This issue ...
Unable to package with a Media Player On End Reached event in a Level Blueprint
Media Framework - Sep 19, 2018If a Media Player's "On End Reached" event is present in a Level Blueprint, even if it is not being used, packaging the project will fail. An error is thrown and a callstack is given. Please see the ...
The vertex color becomes red when importing a static mesh without Color Set
Tools - Aug 28, 2018It seemed to be white at 4.19, but it seems to be red at 4.20. I found out that there seems to be a cause for initialization of Mesh Attributes. As a result of fixing this, it is now displayed in wh ...
Editing Layered Material Instance Causes Editor Crash
UE - Graphics Features - May 23, 2018Crash repros in 4.19.2 and Main CL 4088075. Triggering the crash can be inconsistent- you may have to assign the material instance to a mesh, force shaders to recompile, save, and continue toggling ...
Crash occurs when starting PIE on a level containing a FunctionalTest Blueprint and a sub-level with a landscape component in both levels
UE - LD & Modeling - Terrain - Landscape - Oct 23, 2018Placing a FunctionalTest Blueprint into a level that contains a landscape component and a sub-level that also contains a landscape component results in a crash when PIE is started. This only occurs ...
Map placed actor binding to another actor's Event Dispatcher (multicast delegate) results in duplicate bindings after blueprint recompile
UE - Framework - Blueprint - Apr 17, 2025Context Blueprint actors placed on the map can bind to another actor's event. If an ActorB has a reference to ActorA, it can bind to an event dispatcher in A by creating an event node in ActorB's e ...