Unreal Engine Issues

Blueprint Billboard Components render Opaque in Editor but Translucent during PIE

Billboard components render translucent during play, but render opaque within the editor. Simply adding a billboard as a component to a new actor blueprint and placing it in the level will reproduce ...

Crash when Scrubbing Matinee Slider with Sound Wave using Subtitles

A crash occurs when scrubbing the matinee slider with a 'Sound Wave' that has 'Subtitles' enabled. You need to enable 'Subtitles' within the settings of the asset. Tested issue in 4.7.6 and did no ...

This project crashes when opening most maps after converting to 4.7 Preview 5

This project crashes when opening most maps after converting to 4.7 Preview 5. Also crashes after converting to 4.8 Main (tested in //depot/UE4/Promotable-CL-2429371). Crash log attached. Crash R ...

Root Motion has significant Error when used in Character Movement

Transition ratio getter function not correct for interrupted transitions.

The transition ratio getter simply uses ElapsedTime/Crossfade for the alpha on the transition. Normally this is sufficient, although if you blend between two states A and B such that you interrupt ...

Alembic Geometry Cache crash with multiple meshes

Importing an Alembic geometry cache will cause a crash with multiple assets. Test asset attached that can reproduce this. When I tried with a couple of simple shapes from 3Ds Max I did not get the ...

Source Control: UProject file not added to source control when project is first created

For Perforce (and potentially Subversion), it seems that the .uproject file is not added to source control when setting up source control for the first time. Additionally, it seems that any starting ...

Shader compile error using Point Lights Nvidia Shield

On the Nvidia Shield (portable with the controller attached) if you have a dynamic directional light and at least one dynamic point light no lights will be rendered in the level. Or even just using ...

Crash when after playing media that requires a different conversion shader

The pixel format conversion code in MediaTextureResource is currently reusing the global bound shader state for different pixel shaders. This is not supported. There needs to be one shader state per ...

Packaging for Android while using Online Framework and Online Subsystem Steam Plugins cause failure

When you try to package for Android while Online Framework Plugin and Online Subsystem Steam Plugin, the package fails with: error: undefined reference to 'HtoNL(unsigned int) ...