Unreal Engine Issues

Fixing a Blueprint's compilation error after editor reload causes instances to lose transform

Saving and reloading a Blueprint instance with a compilation error, a.k.a., "Bad Blueprint" will lead to a transform reset when the Blueprint is successfully recompiled. ...

Standalone window played from editor hits assert Index >= 0 in UObjectArray

Standalone window in editor will hit assert in a bit of time. Issue doesn't happen is playing standalone via Visual Studio. ...

Combined Translate and Rotate Mode broken when using Local Space

From UDN: When using the Combined Translate and Rotate Mode we run into an issue where the rotation arrow moves twice as fast as the coordinate frame. The object itself rotates correctly, but if we ...

Log Warning: LogRender:Warning: Missmatch between bShouldGenerateLowQualityLightmaps(0) and r.SupportLowQualityLightmaps(1)

The issue occurs in //UE4/Main as well. This issue can be easily seen by opening any project at latest. It has been observed in new projects both with and without starter content. ...

Replicated subobjects list crashes with unreachable yet valid objects when UE_NET_SUBOBJECTLIST_WEAKPTR=0

This seems to occur when the subobject is considered unreachable but is not yet pending kill/marked as garbage. In this case, IsValid returns true while FWeakObjectPtr::Get returns nullptr for the o ...

Grass on landscape Component was messed up when painting blend mask if this component has LODBias>0

Moving Asset back to the location where a fixed up redirector was located can remove it from source control

Loss in Specularity on Skin Shading when Shadowed by Indirect Capsule Shadows using r.sss.checkerboard 0

A licensee is reporting incorrect or over exaggerated loss of specularity on the Subsurface skin shading model when shadowed by indirect capsule shadows, and then modifying the r.sss.checkerboard se ...

Destructible doesn't return Impulse data on hit

Destructible doesn't return Impulse data on hit User Description: I'm working on a project with destructible structures. I'd like to apply damage to actors that are hit by fractured destructible m ...

Custom Primitive Data changes done in the details panel on a placed BP Static Mesh resets to 0 after modifiying it

Custom Primitive Data values don't stick when editing them in the detail panel on a placed BP actor containing a Static Mesh Component.  Duplicate of [Link Removed] ...