Unreal Engine Issues

Canvas Render Target 2D doesn't get alpha mask when rendering with ES3.1

The Alpha Mask on a Canvas Render Target 2D no longer appears when rendering with ES3.1. This is a regression from 4.24.3 (CL-11590370). This was reported and tested in 4.25 Preview 7 (CL-12759524) ...

DX12/SM6 Sampler Counts increased for empty materials between 5.1 and 5.2

While not a major issue in and of itself, this can cause considerable headaches for materials where sampler counts in 5.1 were at 15/16 or 16/16 and when upgrading to 5.2 are now exceeding the built ...

Objects with physics enabled do not show up in 4.7 preview 2 (when upgraded form 4.6)

After upgrading from 4.6 to 4.7 preview 2 objects that are set to simulate physics will not show up if the user uses the mobile preview. ...

Light does not affect landscape splines in raster pipeline (non-RT)

Content Examples: Blueprints_Overview Stand 1.7 Spark particle system does not fire from coin

During runtime, the red coin in Stand 1.7 on the Blueprints_Overview map of Content Examples should emit a large spark particle system 5 times. While investigating, I tried disabling "Use Fixed Rel ...

[CrashReport] Linux crash - TOpenGLBuffer<FOpenGLBaseVertexBuffer, 34962u, &()

This is an infrequent Linux crash that has affected a few users in 4.17.1 Callstack from Log[2017.09.12-17.23.41:651][ 0]LogRHI: OpenGL MajorVersion = 4, MinorVersion = 5, ShaderPlatform = GLSL_43 ...

[Device Swap][Crash][Stadia] - Crash changing audio device from 5.1 to stereo

There's a crash on stadia when changing the audio device from 5.1 to stereo. There's also a related issue where voice chat breaks when changing from 5.1 to stereo. The background is that CL14889950 ...

Physics Asset doesn't follow the Skeletal Mesh when Physics Blend Weight is set to any value between 0 and 1

Physics Asset doesn't follow the Skeletal Mesh when Physics Blend Weight is set to any value between 0 and 1. Could be related the the fix for this JIRA: https://jira.it.epicgames.net/browse/UE-192 ...

Variables replaced with -1 after jumbling in details pane when one actor is selected and another blueprint compiled

Variables replaced with -1 after jumbling in details pane when one actor is selected and another blueprint compiled. De-selecting Actor_1 sets variables back to correct value when selected again. ...

Xcode 8.3.2 fails to successfully build 4.15.1 from source code

Attempting to build 4.15.1 from source code using Xcode 8.3.2 currently results in the build failing due to warnings that occur in fbxsdk, AlembicImporter, and MetalRHI. ...