Unreal Engine Issues

MMB clicking on a track in the sequencer will copy/paste your current frame to that time, but that action doesn't recognize snapping (it'll end up on a subframe)

[Link Removed] ...

DeactivateImmedaite does not properly complete the system if it's already been culled by scalability

[Link Removed] UDN user found issue. Reproduced internally with custom debug code. ...

Create a "Input Device User Mapping Schema" of some kind for PC

When you are playing a game on PC (especially local multiplayer) many developers want to change how input devices are "mapped" to different players. For example, a single player game might want the ...

Camera Shot Blend does not work when Reverse Play

Camera shot blending on Sequencer does not work when Reverse Play. If we place two cameras in a scene and just blend them by Camera Shot track in sequencer, the view point is interpolated between th ...

InterpCurve<T>::FindNearestOnSegment can return NaN or invalid results

We've had two reports on UDN where FInterpCurve<T>::FindNearestOnSegment returns either "NaN for the final value in the DistancesSq array during the first Newton iteration step." The licensee on on ...

Creating an AnimStreamable asset immediately crashes the editor

When creating an anim streamable we immediately fail a check in the compression code in FCompressibleAnimData::FetchData: checkf(AnimSequence, TEXT("Invalid animation sequence while trying to fetc ...

Widgets will bind input delegates to the Player Controller's Input Component, but never unbind them

This is a bug introduced with 18468289 a while ago. We added this functionality for [Link Removed], which allows input event nodes to be placed within widgets and have them behave correctly.  This ...

[AI] FInstancedStruct is not dupilicated properly if values are different from an Actor's defaults

A licensee reports that the values of an FInstancedStruct do not get properly duplicated if they differ from the default values of the Actor or TArray to which they belong. Possible short-term wo ...

Chaos Clothing CreateClothActor takes a long time with LODs and Self-Collision

Spawning an actor with Chaos cloth causes a hitch when LODs or Self-Collision are enabled on the cloth. LODs and Self-Collision seem to compound the issue. Self-Collision requires a collision simul ...

UnregisterAsyncPhysicsTickActor not being called when actors end play via UWorld::RemoveFromWorld