Unreal Engine Issues
Unreal Engine Issues
Resetting material instance parameters to default value does not update the appearance of the object that the material is applied to
UE - Rendering Architecture - Materials - Mar 10, 2025When a material instance with exposed parameters is applied to a landscape; the parameters set to a new value and then reset to back the default value, the landscape does not respect the new default ...
Incorrect Sampler Type of Normal Texture Samples for M_CobbleStone_Rough Material from Starter Content
Docs - Samples - May 6, 2015The M_CobbleStone_Rough Material from Starter Content needs to have all the Normal Texture Sampler Types set to 'Normal' from 'Color' ...
iOS package with Metal Desktop Renderer renders reflections incorrectly
UE - Rendering Architecture - RHI - Apr 15, 2022When having Metal Desktop Renderer ON, the project renders incorrectly and shows a coloring/lighting issue on the character's reflection. ...
Depth of field and Refraction issue
UE - Rendering Architecture - May 15, 2024Refraction does not adjust the scene depth texture, leading to a mismatch between Scene Color samples and Scene Depth samples. ...
Niagara crash when using a particle attribute reader that has been passed around between modules
UE - Niagara - Oct 28, 2025The following Niagara usage pattern results in either a crash or in incorrect data being read from a Particle Attribute Reader: Emitter Spawn Stage – A module has an Attribute Reader input specifie ...
Could not delete reference in specific level sequence
UE - Anim - Sequencer - Jun 12, 2018Could not delete reference in specific level sequence. It seems to be a soft reference because it becomes a reference for pink color, but I do not know where it is being referred. ...
Fbx exporter do not support material instance
UE - Editor - Content Pipeline - Import and Export - May 15, 2020The fbx exporter should support material instance to export the same result has the user see in the content browser or in the level editor. ...
[VariantManager] Over exposure when using image from file as thumbnail
UE - Editor - Content Pipeline - Variants - Jun 10, 2024This is a sRGB color space issue. Potential solution: Use regular texture import instead of FImageUtils::ImportFileAsTexture2D in ThumbnailGenerator::GenerateThumbnailFromFile ...
Invalid GUIDs on new material instance parameters cause overrides to break on base param rename
UE - Rendering Architecture - Materials - Sep 3, 2025When a parameter value is assigned on a newly created material instance (constant or dynamic) using Set***ParameterValueInternal, the parameter’s ExpressionGUID is left invalid (0,0,0,0). Parameter ...
Widget defaults not updated when modified on a base widget class via the hierarchy
UE - Editor - UI Systems - UMG - May 3, 2023A licensee has reported an inconsistency in how modified base widget class defaults are propagated to children. When modified via the UMG Designer Graph's Class Defaults, derived classes will be mar ...