Unreal Engine Issues

TArray64 RangeCheck prints the incorrect error messages for values over 32-bit length

TArray64 RangeCheck prints the incorrect error messages for values over 32 bit. Repro Rate: 4/4 Tested this in //UE4/Release-4.27 @ CL#18319896 and the issue did occur there, it is not a regressi ...

Reference to BP enum is not saved on integer bitmask types if the default value is "none"

Unable to multiple a Vector2D with a float in Blueprints

Reported by licensee: [Link Removed] In UE4, we used Multiply_Vector2DFloat as the underlying function for this operation. In UE5, we're relying on promotable operators to the work. However, that o ...

Cook fails when a MetaSound Source object is referenced utilizing FObjectFinder in C++

Android Cook fails when a MetaSound Source object is referenced utilizing FObjectFinder in C++ Repro Rate: 3/3 UATHelper: Cooking (Android (ASTC)): LogInit: Display: LogMetaSound: Error: Target int ...

Material expression called Compiler->TextureParameter() without implementing UMaterialExpression::GetReferencedTexture properly

when trying to replace a Material Function instance, with another instance, as the base color of a material within the Material Graph, the editor crashes with the following error:Assertion failed: ...

Differences in DistanceToNearestSurface and DistanceFieldGradient results between 4.27 and 5.0

In the UE5 case, we end up seeing very harsh lines in both the gradient and the distance to nearest surface examples whereas the results in 4.27 appear smooth.  It was also interesting to observe c ...

Get wrong primitive scene data on mobile preview with GPUScene enabled

The console command bugscreenshot doesn't work correctly in stand alone or packaged games

The console command bugscreenshot doesn't work correctly in stand alone or packaged games. It screenshots the UI and leaves the rest transparent. This is different behavior from PIE, New PIE, or jus ...

Moving a water body causes engine to drop fps and spike ms

Moving a water body lowers performance on the engine. The fps drop from 120 to 30 and ms spike from 8 to 30. This issue occurs in 5.0 Binary and 4.27 Binary on Windows. On Mac, FPS drop and ms spike ...

Assertion thrown while creating a Geometry Collection with Hardware Raytracing enabled along side r.RayTracing.Geometry.GeometryCollection 1

A raytracing project with hardware raytracing enabled and r.RayTracing.Geometry.GeometryCollection set to 1 triggers a crash when trying to create a geometry collection. ...