Unreal Engine Issues

Material slot assignment incorrect after mesh reduction completely removes all triangles from a section

When mesh reduction results in a section becoming empty, the material slots are incorrectly assigned. e.g. if section 0 gets removed due to it having no triangles after reduction, then its material ...

BlendOutTime setting doesn't work when unlinking multiple anim layers

When we unlink the layer, we call UAnimInstance::PerformLinkedLayerOverlayOperation In that function, ClassToSet is null, so we loop over the layer nodes and call SetLinkedLayerInstance(this, nullp ...

Differences in DistanceToNearestSurface and DistanceFieldGradient results between 4.27 and 5.0

In the UE5 case, we end up seeing very harsh lines in both the gradient and the distance to nearest surface examples whereas the results in 4.27 appear smooth.  It was also interesting to observe c ...

Enable "Set members..." support for vectors and similar structs

Currently, structs that have a custom make function aren't able to use the "Set members..." node in Blueprints. For vectors and similar structs, this is slightly inconvenient since it requires using ...

Last frame pose is not evaluated when playing Anim Montage with Blend Out Time of 0 in AnimNodeSlot

When playing AnimMontage with BlendOutTime set to 0.f with AnimNode_Slot of AnimBP, it seems that the last frame pose may not be evaluated. this issue does not occur in high frame rate and does not ...

CollisionEvent and other events during ChaosCaching do not occur

Shared collection using SVN as SCC Provider has "!" icon in the content drawer

One of the problems is Editor can not get correct SVN status of collections at launch. The following workaround enables to get the correct status. FCollectionStatusInfo FCollection::GetStatusInfo() ...

References to external actors are not removed when a data layer is deleted

Data layers still contain references to external actors when they are deleted. ...

Gamepad_Special_Left is bound to different buttons on Windows and Mac for P.S4/5 Controllers

On Windows: Gamepad_Special_Left is triggered by pressing the touchpad button On Mac: Gamepad_Special_Left is triggered by pressing the "Share" button ...

Live Coding doesn't auto-compile upon reopening a project

When creating a C++ class and compiling utilizing Live Code, upon creating a blueprint class utilizing that C++ class as it's parent and restarting the editor, the blueprint class loses it's parent ...