Unreal Engine Issues
Unreal Engine Issues
PCG causes crash when UGrassInstancedStaticMeshComponent is set as a mesh entry for the static mesh spawner node
UE - World Creation - Procedural Tools - PCG Component - May 16, 2024PCG causes crash when UGrassInstancedStaticMeshComponent is set as a mesh entry for the static mesh spawner node. ...
Baking lighting on Nanite landscape crashes the editor
UE - Graphics Features - May 23, 2024When static lighting is baked using CPU lightmass for a nanite-enabled landscape it causes an editor crash with this assert: ...\Lightmass.cpp] [Line: 546] Attempting to add the same material twice ...
Add Substrate Material Support to Lumen Performance Overview
UE - Graphics Features - Substrate - Feb 10, 2025There is a discrepancy when inspecting Substrate materials in the Lumen Performance Overview. Compared to viewing non-Substrate materials the overview show all surfaces in red indicating that Lumen ...
Overlay materials stop working when Show Collisions
UE - Simulation - Physics - Apr 7, 2025Overlay Materials are disabled when the Collision showflag is enabled. ...
GPU PCG node fails to cook if within Subgraph
UE - World Creation - Procedural Tools - PCG Graph - May 13, 2025When cooking a project that has a PCG graph with a subgraph containing a GPU node (Point Processor in the example provided), the cook fails with an illegal reference. However, the same GPU node used ...
Skeletal mesh to which the AnimationBudgetAllocator registered in the animation track is applied does not play the initial frame animation
UE - Anim - Runtime - Jun 10, 2025This issue occurs when “Auto Register with Budget Allocator” is enabled for the skeletal mesh. Unchecking “Auto Register with Budget Allocator” seems to resolve the issue. Adding the following to th ...
Bindless Textures in active use are able to be garbage collected
UE - Rendering Architecture - RHI - Jul 9, 2025It is possible for textures referenced in the bindless texture data assets that are actively used in materials being rendered in the active viewport to be garbage collected. This results in the mat ...
Importing an FBX twice will cause a crash
UE - Platform - Linux - Apr 9, 2015When importing an FBX into a project if the "Import" option is chosen rather than "Import All" then importing the same FBX a second time will cause the editor to crash. ...
Drastic increase in FBX import times from 4.9 to 4.10
Tools - Dec 9, 2015The attached asset (including animation) takes 9 minutes to import in 4.10, where it takes 42 seconds in 4.8 and 4.9. You don't really notice this until you start to get up to larger assets or long ...
Starter Content folders return to content browser after being manually deleted
Tools - May 20, 2015If Starter Content is added to a newly created project and then the Starter Content is deleted, upon re-opening the editor the Starter Content files will return to the Content Browser. Workaround: ...