Unreal Engine Issues

FX.TestGPUSort fails on Vulkan

“FX.TestGPUSort” fails on both PC Editor and Android with Vulkan RHI. ...

WorldContextObject is null in BP function library

Arrays on multicast events called from the server are not passed to clients

Arrays that are passed into a Multicast Event as an input are not available on clients who call the function Regression?: Yes This did not occur in 4.19.2 ...

FCanvasTriangleRendererItem relies on BaseVertexIndex not being zero.

The root of this issue is that FLocalVertexFactory is doing manual vertex fetch in the shader. In HLSL, this relies on SV_VertexId. In GLSL, it's gl_VertexId. HLSL does not include the base vertex i ...

"Pausing" A TimeSynth causes a crash

Clicking and holding anywhere on the editor outside the viewport when PIE causes a crash. The AudioRendering thread throws the following assert: Assertion failed: FreeClipIndex < PlayingClipsPool_Au ...

SingleLayerWater with PixelDepthOffset gives wrong refraction

We can see refraction gets distorted after we have a bigger PDO value, and it's not because the depth is more shallow, but looks like some kind of scene color texture lookup error. Also, not sure i ...

Instanced Impostors Render Black in UE5 editor

Issues converting enum to byte in BP

User experienced unexpected AI behavior and was kind enough to share a stripped down version of the project. I was able to nail down issues user was experiencing to failed enum-to-byte conversion. U ...

World Delta seconds appears to Cause a miss calculation (regression 4.12.3 -> 4.12.4)

If the user uses world delta seconds in a calculation there appears to be some incorrect values. Note there is also a users project attached if you would like to look at that example. ...

Stereo layer appears to move when used with the Oculus Rift

Stereo layer appears to move/slide as the player moves the HMD from side to side when using the world locked setting for the stereo layer. ...