Unreal Engine Issues
Unreal Engine Issues
Actors in Level Sequence in a World Partitioned level do not move
UE - World Creation - Worldbuilding Tools - World Partition - Jan 11, 2023Regression: Tested in UE5/Release-5.0, this issue does not occur so it is a regression This issue occurs when the cube has "Is Spatially Loaded" enabled in Details as well as when the cube is added ...
Precomputed AO Mask renders with value of zero after building lighting
UE - Rendering Architecture - Materials - Jan 13, 2023Regression: Tested in UE5/Release-5.0 at CL 20979098, this issue does not occur so it is a regression. This issue occurs in 5.1 for both normal light building and GPU Lightmass building. In 5.0 th ...
AnimNotify does not register when used in code
OLD - Anim - Jun 7, 2016NotifyQueue.AnimNotifies Does not register the notifies set in the editor. EX: NotifyQueue.AnimNotifies.Num() will always return 0 even when notifies are set ...
Lightmass Portal X Scale resets on update
UE - Graphics Features - Apr 20, 2017After setting the "X" Scale of a Lightmass Portal, attempting to move/update the object causes the scale to reset to 10.0. Is this necessary for some reason? ...
Adjusting transform of a mesh with LODs causes LODs to flicker
UE - World Creation - Worldbuilding Tools - Foliage - Jun 3, 2015If a hierarchical instanced static mesh has LODs and is scaled in a blueprint, the mesh will rapidly switch between LODs, causing a flickering effect. Note: This only seems to occur if the camera ...
UVs are scaled drastically when importing from Solidworks
UE - Editor - Content Pipeline - Datasmith - Importer - Sep 28, 2018UVs are scaled drastically when importing from Solidworks. When comparing it to an Engine Cube and adding a texture to it you can see the difference in UV scaling. The texture will need to scaled to ...
[Audio Modulation] - Ensure is thrown when attempting to modulate a Source Effect at runtime
UE - Audio - Modulation - Sep 6, 2023Does *not* occur in editor. Only in standalone and runtime. Occurs when modulating Chorus or Bit Depth Also occurs in 5.2 and 5.3. I also noticed the test with this is supposed to set the chorus e ...
FHLSLMaterialTranslator::GetMaterialEnvironment can crash or not load UMaterialParameterCollections
UE - Rendering Architecture - Materials - Apr 30, 2025In UE 5.5, the Editor may crash in FHLSLMaterialTranslator::GetMaterialEnvironment when loading materials with Material Parameter Collections, likely due to async loading. Calling ParameterCollectio ...
Monitor Directories does not auto import or re-import from network locations
UE - Editor - Content Pipeline - Import and Export - Nov 15, 2017Monitor Directories feature in the editor preferences does not auto import or re-import from network locations. There is no issue if the location of the folder is local. This issue does not appear t ...
GoogleARCoreJavaHelper functions are not correctly exported publicly
UE - Platform - XR - Oct 31, 2018The jni functions in GoogleARCoreAndroidHelper.cpp are not correctly exported, when we tried to build a Test project it failed with this exception: java.lang.UnsatisfiedLinkError: No implementatio ...