Unreal Engine Issues
Unreal Engine Issues
Bloom not Working on Samsung Galaxy S5
UE - Platform - Mobile - Feb 12, 2016As the title suggests, bloom on the Samsung Galaxy S5 is not working. I tested this against another android device, the Acer Iconia Tab 8, which also supports Full HDR w/Sun according to the docum ...
ImageSize in Image widget is not set when setting a texture as a brush
UE - Editor - UI Systems - UMG - Aug 1, 2023Since FDeprecateSlateVector2D has been implemented in 5.2, the following function calls will always fail. Therefore, the ImageSize is not updated. This problem does not occur in 5.1. void SBrus ...
[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 ...
Crash When Loading Cooked Material Assets in Editor Due to Shader Serialization
UE - Rendering Architecture - Shaders - Aug 27, 2025In Unreal Engine 5.6+, the new shader serialization logic in FShaderMapResourceCode::Serialize does not correctly handle cooked assets that are loaded back into the editor (e.g., from a mounted .pak ...
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 ...
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 ...