Unreal Engine Issues
Unreal Engine Issues
LOD Build Scale set higher than 1 will cause a merged actor to increase to that scale when created
OLD - Anim - Aug 8, 2017LOD Build Scale set higher than 1 will cause a merged actor to increase to that scale when created. It seems to be using the LOD Build Scale to double in size on actor merge. This is a regression: ...
Crash in GameplayTag Editor Widget when editing array of tags on a component
UE - Gameplay - May 17, 2022Editing an array of gameplay tags on a component belonging to an actor instance can lead to a crash. There are inconsistencies with how the Gameplay Tag Editor widget behaves:Array of gameplay tags ...
Video material previews incorrectly on Mac
TM - Rendering - Apr 3, 2025Received multiple reports of users on Mac computers experiencing issues previewing video materials in Twinmotion 2025.1. When adding video materials to the scene, the scale seems to be incorrect an ...
Misaligned sampling in UI Material with with CustomStencil
UE - Editor - UI Systems - May 19, 2025The output of the CustomStencil node in a User Interface material does not align with the viewport dimensions. Toggling fullscreen/windowed mode (F11) causes the offset to reappear, so scaling the n ...
Modifying FinstancedStruct (Blueprint structs) properties inside another FInstancedStruct triggers an ensure and properties do not get saved.
UE - AI - Dec 16, 2024There is a bug with Blueprint structs having FInstancedStruct as a property. If you modify the DefaultValues of any property of an FInstancedStruct inside the blueprint struct asset, an ensure will ...
HISMC always shows lowest LOD
UE - World Creation - Worldbuilding Tools - Foliage - Nov 22, 2016User report: HISMCs are currently broken in master. They always show the lowest LOD available for a mesh, so if you have a HISMC with a tree mesh set, you would always see the billboard of the tree ...
Visual discrepancy appears with local position offset while mipmaps are enabled
UE - Graphics Features - Oct 20, 2017There is a visual discrepancy appears with the local position offset while mipmaps are enabled, when using a custom node that takes information from the local position node, with a texture that cont ...
The FNetNameMapping::GetUniqueName function appends numerical values to the end of the previous name instead of replacing the previous name's numerical value
UE - Gameplay - Blueprint Compiler - Feb 23, 2018The GetUniqueName() function attempts to make sure that all node names are unique. For nodes that are used a large number of times, it adds a numerical value to the end of the name. Prior to 4.18, t ...
Spring Controller node rotation not working
OLD - Anim - Jan 31, 2019The issue has been reported by one of our licensee. He proposed a patch to be applied in AnimNode_SpringBone.cpp 188,189c188,191 ＜ FVector ParentToTarget = (TargetPos - ParentSpaceBase.GetLoca ...
Blueprint Array/Map properties with DefaultToInstanced types are not instanced properly
UE - Gameplay - Blueprint - May 6, 2019At a licensee, I discovered a problem where Blueprint-created array and map properties are not correctly propagating the ContainsInstancedReferenced property flag. This means that if you create a Ma ...