Unreal Engine Issues

Switching raytracing console variable in runtime can crash engine.

Licensee reported that is caused by missing ECVF_RenderThreadSafe flag in these console variable definitions. r.RayTracing.Shadows r.RayTracing.AmbientOcclusion r.RayTracing.Reflections Here is a ...

EditCondition doesn't work on C-arrays

Toggling a bool doesn't enable/disable the elements of the array similarly to how it does for TArray in the details panel. Static arrays should have the same semantics as TArray with regards to edit ...

Crash occurs loading a sublevel containing landscape with ray tracing enabled

In raytracing enabled, When loading a sublevel containing landscape with LoadStreamLevel function following error is shown. Assertion failed: Pair != nullptr [Link Removed] [Line: 584] Licensee re ...

Depth buffer collision kills all particles after 1 second

Somehow the namespace broke between the collision and the trace modules. [Image Removed] [Image Removed] ...

Crash calling destroy actor for Geometry Collection while it's simulating

Crash occurs when user call Destroy Actor on a Geometry Collection Actor. This seems to only occur while the actor is simulating. If called while on the ground, it doesn't seem to occur. ...

Steam API is disabled when playing in Standalone Game

The Steam API is disabled when playing a Standalone Game that was started using the Play button. REGRESSION: Yes Worked: 4.24.3 Binary CL-11590231 Broken: 4.25 Binary CL-13261010 I do not see this ...

UDelegateProperty define missing in DefineUPropertyMacros.h

The following code should be added in defineUPropertyMacros.h #ifndef UDelegateProperty #define UDelegateProperty DEPRECATED_MACRO(4.25, "UDelegateProperty has been renamed to FDelegateProperty") F ...

Source Won't Build - UnrealInsightsCLI.cpp References Missing Header

Line 9 in https://github.com/EpicGames/UnrealEngine/blob/4.25/Engine/Source/Programs/UnrealInsightsCLI/Private/UnrealInsightsCLI.cpp is '#include "TraceServices/SessionService.h" which used to be lo ...

Expanded array of structs is collapsed whenever a new array item is added

Use of SpiralBlur-SceneTexture MaterialFunction in translucent material results in compile errors

This appears to be new in 4.25. ...