Unreal Engine Issues

FHLSLMaterialTranslator::GetMaterialEnvironment can crash or not load UMaterialParameterCollections

In UE 5.5, the Editor may crash in FHLSLMaterialTranslator::GetMaterialEnvironment when loading materials with Material Parameter Collections, likely due to async loading. Calling ParameterCollectio ...

Find in Blueprints: Default values in struct members are not returned

Context Find-in-Blueprints can be used to search the current, or all, blueprints. If you enter a simple string, it would return nodes, pins, pin default values and default values for BP Variables ( ...

Ensure triggered when creating Scene Proxy for GroomComponent

When a room component is added in C++ via the actor constructor, an ensure is triggered from precaching and the groom component. Behavior also observed on UE5/Release-5.5, CL: 40988944 ...

[Interchange][glTF] Morph animations are not imported

[Link Removed] From the UDN: When importing a glTF file from Blender with both skeletal and morph animations, only the bone animations are imported - the morph animation curve is completely missing ...

Runtime virtual texture sometimes shows corrupted tiles

Some licensees have reported seeing intermittent corruption of runtime virtual texture tiles. This hasn't been reproduced at Epic. Usually this shows up as some small percentage of rendered tiles l ...

A partially broken Geometry Collection ends up with garbage CollisionGroup data that can lead to strange behaviors

A partially broken Geometry Collection (GC) ends up with garbage CollisionGroup data that can lead to strange behaviors. The licensee has noticed that a GC that goes thru a field applying ExternalS ...

FieldOfView and AspectRatio shouldn't be animated on Cine Camera Actors

Crash when exporting static mesh actor to FBX (Array index out of bounds)

I set the Forced LOD Model on the mesh component > 1, then tried to export, this is what causes the crash. Here is my suggested fix, we just don't use Git or I'd do a PR: In the else() branch of FF ...

5.5 Static Mesh Import Pipeline Regression

This question was created in reference to: [Link Removed] This post references the first post because this problem was not discovered till now. I think it was masked because the issue appears to be ...

Switching project monitor with shift+win+arrow keys

Using Windows+Shift+Arrow keys to move the application window in Windowed Fullscreen from a low resolution monitor to a high resolution monitor does not resize the application window on a Windows 10 ...