Unreal Engine Issues

Playing two instances of the same level sequence with an audio track will not work as expected.

Two instances of the same level sequence playing audio will cause the audio to stop playing. ...

Crash during shader compilation when r.Shaders.Optimize=0

The primary shader crashing is "FVisualizeLumenSceneCS" which I've put in the callstack section, but I think this is more likely a binding problem as I'm also see the following crash with cloud shad ...

Circularly Dependent Stacked GE Attrib Mods will be out-of-sync on Client/Server

Water reflections and GI flicker in 5.4 and 5.3 (fine in 5.2)

Since 5.3 customers have been reporting flicker with water surfaces, demonstrating that in 5.2 this flicker is not present. [Link Removed] ...

SAnalogSlider moves slowly when step size is large

SAnalogSlider calculates FastestStepTime by multiplying the step size value by a constant, resulting in high numbers for larger step sizes. This gets lerped from 1 and used as the repeat time, resul ...

PostLoadGroup can cause materials to cache GWhiteTexture into uniform expressions

It may occur that during loading screens, materials using material layers will load with GWhiteTexture before the real textures are ready. This seems to be because of a race condition due to PostLoa ...

MoverExamples: characters have 1-frame unnecessary extra input latency

Due to the way input is handled on the MoverExamplesCharacter, including AnimatedMannyPawn, we have a delay in the time between when an input event occurs and when it is ingested by the movement sim ...

Certain Niagara particles can disappear after switching to the debug cam

Rewind Debugger doesn't work as expected when PIE net mode is set to Listen Server

RenderTrace fatal error, shader expected a uniform buffer at slot 1...

RenderTrace plugin does not appear to have been updated for a change that moved the GPUScene out of the View buffer to its own uniform buffer. (CL 24027890) The test project is based on FirstPerson ...