Unreal Engine Issues

Inversing the scale of a skeletal mesh when it's simulating physics results in the mesh and collision being flipped

The attached project has 3 skeletal meshes. One with its original transform and then 2 copies with an inversed scale in the X axis for one and the Y axis for the other. When pressing play, the meshe ...

SpeedTree velocities broken

Forward renderer's masked material are broken with 8x MSAA

Problem seams to be coming from MaterialTemplate.ush's GetDerivativeCoverageFromMask() ...

ios threads freeze for almost one second when notifications pop up

see the UDN .Setting bOtherAudioPlayingNow to always false can workaround the problem, but it's better to have a more robust solution. ...

A use-after-free issue caused by GPUParticle

ShaderPermutations are forced to generate in MaterialInstance if MaterialLayer is added in Material.

Bound component functions in a child can incorrectly override parent binding

The way in which component (and actor) events are named can result in bindings in a parent for a different event overriding the binding in a parent. ...

Crash occurs when adding code to custom node in Material Function.

A Salesforce ticket reports that entering the above code into a custom node in a Material Function causes a crash. I was able to repro his crash reliably. This is a regression. Working as expected ...

Split pins on nodes within sub-graphs in an animation blueprint are broken

There's a bug in the anim bp compiler which results in split pins on animation nodes not being merged properly back onto their parent pin during compilation. The result of this is that any input to ...

Scaling sphere with gizmo causes it to not work with line trace

Changing the scale of an actor with the level editor gizmo follows a very different codepath than changing it via the details panel. A side effect of this seems to be that line traces will no longer ...