Unreal Engine Issues

Null access to Unpossessed controller with seamless travel

The unpossessd controller will not be removed from UWorld::ControllerList unless destroyed. This causes null access to the ControllerList when GC occurs during seamless travel execution. The unposse ...

Rounding errors are present in FJsonValue::TryGetNumber(int64&) and FMath::RoundHalfFromZero()

A licensee reported a bug in rounding of a call to FJsonValue::TryGetNumber(int64&) with large values.  In investigating this, it appears that equivalent problems also exist in FMath:: rounding func ...

Assertion failed in DX12 RHI after instancing actors

It doesn't happen with the DX11 RHI ...

MDL imported from Substance Source with Datasmith causes a crash

MDL downloaded from Substance Source causes a crash. This is reported on UDN by an Enterprise customer: https://udn.unrealengine.com/questions/487598/why-would-ue4-is-always-crashing-when-import ...

Nested struct splitting gives incorrect node input for fast path

When any of the inputs to a fast path node are connected from a struct member from multiple splits or splits combined with breaks, all input connections to the node will be effectively ignored, inst ...

Tracks in target sequence do not appear in recorded sequence

New animations not added when making changes to FBX files from blender

When adding new animations to a blender fbx file (via the new actions feature) the editor does not appear to add the new animations to the content browser when changes are imported. ...

Disabling DBuffer Decals causes Decals not to render

Disabling the Decal DBuffer in the  Project Settings>Rendering causes the Decals to not render on geometry that overlap their respective Decal Actor. Tested in 4.21.2 (CL - 4753647), 4.22 (CL - 5 ...

Using more than a single break node disables fast path

Using more than a single break struct node in sequence (despite no break nodes performing calculations) disables fast path. Splitting structs instead does not cause this issue. ...

When using Lighting Scenario, loading order will affect how it's applied to the instances

When using Lighting Scenario, loading order will affect how it's applied to the instances, resulting in corruption if content is loaded after the lighting scenario ...