Unreal Engine Issues

Particles can flicker at the end of first emitter loop when interpolated spawning is enabled

Particles flicker at the end of first emitter loop when interpolated spawning is enabled This issue does not occur if interpolated spawning is disabled. This issue does not occur for any of the su ...

SkyLight IBL looks blurry on Android

Fbx importer: Issue when reimporting staticmesh base LOD and there is some custom LOD

When we reset the material to fbx we should take care of the LOD since we will change/reorder the material slot array. ...

Building in VS fails if Application.ico is missing

When building a project in VS, the build process will fail if Application.ico is missing from the /Build/Windows/ folder. User reported seeing this when checking in/checking out a project on differ ...

"Assertion Failed" crash while Force Deleting the FirstPerson folder within FirstPersonTemplate project

The Editor crashes while Force Deleting the FirstPerson folder within a FirstPersonTemplate project. This behavior is consistent between Blueprint / Code versions of FirstPersonTemplate projects. ...

Typos in Array.h

In Array.h, there are a few typos in comments. In 4.9.2 and 4.10, the typos occur at line 2335 and 2359. *@param InIntem Item to be added. In Main, the typos are located at lines 2471 and 2495. ...

When using a SpeedTree asset, a Zero Triangles warning appears

When exporting from SpeedTree with LODs + billboard, It seems that a warning is issued by including a material used only by Billboard. Is there a way to deal with it? ...

Duplicating BP actors reset edited Variables to Default Value if Variables name start with Chinese Character

Hints: It has no problem in 4.24, only happening in 4.25 It has no problem as long as the Variable name is contained with Alphabat(English characters) fully; or start with Alphabat(A_变量 is fine) ...

Shadow Flickering with Lighting Channels

It looks like static meshes can invalidate large numbers of VSM pages when the geometry and the light are not on light channel 0. ...

NavMesh generation should not care for Actors that are hidden in the Editor.

The problem is that the Cube is still loaded but "HiddenEd". It's AActor::bHiddenEdLayer property is set to true by the WorldPartition System. The Actor is dirty which makes the WP system pin it (wo ...