Unreal Engine Issues
Unreal Engine Issues
[CrashReport] UE4Editor_HotReload!`FHotReloadClassReinstancer::UpdateDefaultProperties'::`2'::FPropertyValueMemoryWriter::operator<<() [hotreloadclassreinstancer.cpp:372]
UE - Foundation - Core - UObject - Sep 14, 2017This is a common crash that has occurred for users since at least 4.16. User DescriptionsUsing the PIE i compiled some c++ then quit the PIE before the end of the compilation. Source Context 35 ...
Build Plugin process fails with null reference exception when building a plugin that has "Can Be Used With Unreal Header Tool" set to true
UE - Foundation - Cpp Tools - Dec 18, 2018Trying to use UAT to build a plugin that has CanBeUsedWithUnrealHeaderTool set to true will fail due to a null reference exception (log from Main CL 4666322 attached). This happens because the plugi ...
ProxyLOD plugin generates uninitialized vertices at end of a vertex buffer
UE - World Creation - Worldbuilding Tools - HLOD - Sep 11, 2020ProxyLOD::FQuadricMeshSimplifier::OutputMesh may remove duped verts. The input vertex buffer was resized by numVerts from FQuadricMeshSimplifier before calling OutputMesh. So these behaviors genera ...
UK2Node_EnumLiteral always outputs defaulted (0) value if input pin is connected
UE - Gameplay - Blueprint - Sep 28, 2018The reported behavior repros in 4.20 and 4.21, but does not repro in 4.19. Regarding the "Literal Enum" node in blueprints: When an input enum value is connected to the input pin, the output is al ...
Investigate Streaming getting disabled on a World Partition map as a side-effect of loading the map as a regular asset
UE - World Creation - Worldbuilding Tools - World Partition - Apr 1, 2025We recently encountered an odd issue where loading into our main world partitioned map would result in a crash caused by all streaming cells getting loaded at the same time. Turns out this was cause ...
Fbx importer can import valid under 30Hz anim at 30Hz
Tools - Jul 17, 2017The samplerate of a track was compute with the following formula Equation 1: number of Key / animation Time This formula work only if we have animation keys that are time equidistant. example of ...
[CrashReport] Integer divide-by-zero | RHIGetRenderQueryResult() [d3d11query.cpp:59]
UE - Graphics Features - Aug 29, 2017This is a common and longstanding crash that has occurred since at least the 4.15 release and has affected more than 200 users. User Descriptionsafter opening a projectwas just trying to start a pr ...
Static lighting issues with foliage
UE - World Creation - Worldbuilding Tools - Foliage - May 28, 2016The user reports a scene with a reasonable number of foliage instances renders with black lighting: After updating to 4.11 (.1 or .2 doesn't matter) I have not been able to bake my lighting properl ...
User Defined Enum Display Names aren't deterministic for localization/cooking
UE - Editor - UI Systems - Localization - Feb 1, 2016UUserDefinedEnum contains an array of FTexts which are supposed to be used as localized display names, however these are populated from the underlying UEnum type using the meta-data on the object. T ...
Recast rcScopedDelete<T>::resizeGrow copies too many elements
UE - AI - Navigation - Nov 5, 2024Context The Recast module has a helper struct rcScopedDelete for allocating, resizing and automatically freeing the allocated memory when the struct goes out of scope. Its allocation functions can ...