Unreal Engine Issues
Unreal Engine Issues
Static meshes with auto-generated LODs can no longer share lightmaps between LODs
UE - Graphics Features - Feb 21, 2017User report: With 4.15 using only auto generated LOD's static mesh LOD levels can't share computed lightmaps anymore. This cause severe memory increase and it's making lightmass build times way slow ...
Two Incompatible Object types are able to connect via add array in Blueprint Graph.
UE - Gameplay - May 21, 2019it is possible to connect two incompatible types to an Array Blueprint function node by connecting the Item pin first. The type of Array function nodes is determined by the first thing connected t ...
USplineMeshComponent::CalcBounds may return invalid value
USplineMeshComponent::CalcBounds function should be returning an FBoxSphereBounds type, but in the implementation it instead outputs an FBox. This may result in the returning of invalid results, esp ...
Multithreading Race Condition Crash with Anim Montages
OLD - Anim - Apr 2, 2015Basically, the problem is that the Main Thread is able to run AActor::Tick() (including Blueprint Tick Events) at the same time that the animation system is running functions such as UAnimInstance:: ...
Foliage instances don't move with a static mesh when it is shared between two foliage actors
UE - World Creation - Worldbuilding Tools - Foliage - Apr 26, 2023From Licensee: The bug comes from the call of the function `FoliagePartitioningUtils::Update` in the method `AInstancedFoliageActor::MoveInstancesForMovedComponent`. When the function `FoliageParti ...
Re-parenting blueprint actors do not lose interfaces associated with their previous parent blueprint
UE - Gameplay - Blueprint - Jul 23, 2015Re-parenting blueprint actors do not lose interfaces associated with their previous parent blueprint. Interfaces and interface functions can no longer be deleted from the re-parented actor. ...
r.SupportPointLightWholeSceneShadows Set to False Causes Crash When Trying to Place a PointLight
UE - Graphics Features - Jul 25, 2018If you disable Support PointLightWholeSceneShadows and try to place a point light in a level the editor will crash. Current work around is put shadows to low from engine scalability settings. Wor ...
Uncompressed Lightmaps rendering incorrectly in HTML5
UE - Platform - Mobile - Mar 25, 2015When using uncompressed Lightmaps in HTML5, the lighting is rendered incorrectly. Using (the default) compressed lightmaps, generates no error. Also reproduced in Main Promotable-CL-2487422 (Enscr ...
Blueprint compile failure with empty FTimerHandle return value
UE - Gameplay - Blueprint - Jul 13, 2017Blueprint compile failure when returning a Timer Handle from a function call when the Timer Handle node is not connected. Compile failure message: "ICE: The type of property %s doesn't match a term ...
WorldCoordinate3Way produces Incorrect Axis Lerps
UE - Graphics Features - May 18, 2016The Material Function WorldCoordinate3Way seems to incorrectly perform the Lerps from the axis contributions of the normals. An example is show here, with the left objects using the version that com ...