Unreal Engine Issues

Mobile projects crash with Event Driven Loader disabled

iOS + Android apps will crash on launch if Event Driven Loader is disabled. Confirmed in 4.23 MAIN at CL 5035898 ...

sRGB flag is enabled when importing hdr image file

The sRGB flag is enabled when importing hdr files. This is disabled in PostEditChangeProperty, but remains enabled if we do not edit the file. I think the sRGB flag should be disabled for hdr image ...

Landscape Resample Crashes Editor in Sublevel Map

Opening map assets from "Open World Demo Collection" causes engine to freeze

Opening map assets from the "Open World Demo Collection" sample results in the engine freezing. No crash occurs, just a lock up of the engine at 75%. There is the possibility that it could take s ...

Animating the camera and character with LiveLink makes the character tremble

GIF images are attached. The animation is smooth on the MotionBuilder side, but it is "slightly" wobbly in UE4. The licensee reports that the situation can be heavily shaken by the situation. Also, ...

Incorrect AO rendering when that using SSGI.HalfRes

This problem seems to have started from 4.26. Also, setting r.DiffuseIndirect.Denoiser=0 will increase the noise but invisible the rendering in problem. ...

BaseColor of SubSurfaceProfile cannot be obtained when using GBuffer in Niagara.

References to original assets/widgets are left behind when replacing them in UMG

StaticMeshComponent occasionally doesn't simulate physics after SpawActor.

When spawning Pawns with a StaticMeshComponent with SimulatePhyscis=True, they occasionally may not simulate physics. This can be reproduced by simply repeating the respawn. The frequency of reprodu ...

Two planar reflection and translucent materials draw reflections on one side only

This problem seems to be fine when the material is Opaque.[Image Removed] ...