Unreal Engine Issues
Unreal Engine Issues
The packaged build of a project that has a strong pointer initialized to nullptr immediately closes on launch
UE - Foundation - Core - Aug 2, 2019When a strong pointer is set to null the packaged build of the game will immediately close. No crash logs were were made and no Saved folder was made (<Project Name>/Saved/Logs). An example project ...
Ribbons Don't Follow Their Source Particles When Scaling
UE - Niagara - Mar 23, 2020When Ribbon Data in a particles system that is following is scaled in an instance the ribbons scale appropriately, but they don't follow updated location of their source particles. See the attached ...
Compile on load crashes for classes within an abstract class
UE - Gameplay - Blueprint Compiler - Feb 20, 2021When compiling on load in -game, a blueprint class that inherits from a native class that is marked within and the class that it is within is abstract, a crash will occur when FBlueprintCompilationM ...
Incorrect volume bounds check in FTranslucentLightInjectionCollector::AddLightForInjection
UE - Graphics Features - Apr 8, 2025The 'VolumeBounds' array in FTranslucentLightInjectionCollector::AddLightForInjection is accessed as a pointer instead of with 'VolumeCascadeIndex' and thus fails bounds checks for the outer volume. ...
Setting Slate.ShowBatching to 1 makes the entire screen green unexpectedly
UE - AI Workflows - UI Systems - Slate - Jun 19, 2025This issue may have occurred due to a refactoring of the related functionality during the engine update from version 5.4 to 5.5. The main reason is that the randomization of BatchColor doesn't work ...
Using a Wait Delay node on Linux causes editor to immediately close without crashing
UE - Platform - Linux - Sep 14, 2015If a call is made to the blueprint node Wait Delay the editor will immediately close during PIE when the call is made without the crash reporter appearing. The "Wait Delay" node only exists on Linu ...
Media Texture Not Displaying When Launched to Android Device
UE - Rendering - Architecture - Materials - Dec 17, 2015UPDATE: 12/23/2015 This appears to be occurring on packaged projects for Win64 as well. ====================================================================== When attempting to launch a level t ...
Compile error when Blueprint Interface returns a map type variable
UE - Gameplay - Blueprint - Feb 26, 2019A Blueprint Interface function that returns a map type variable will fail compiling with various errors when called in another Blueprint. If the same function is setup in the Actor Blueprint instead ...
Crash When Building Lighting for a Level with Previously Purged Lightmaps
UE - Graphics Features - Feb 27, 2019If you go into World settings, select Force No Precomputed Lighting, rebuild lighting to purge lightmaps, uncheck Force No Precomputed Lighting, save level, quit, reload project and try rebuilding l ...
RemoveAxisMapping() removes axis mappings of the same key regardless of Scale value
UE - Gameplay - Jun 26, 2019When you remove an axis mapping using a specific key it will remove all mappings even if they have separate scales. The user found a fix that I verified that worked. In "InputSettings.cpp", which i ...