Unreal Engine Issues

Startup Movies Fail to Play when Audio Devices are Disabled

If a user launches a project in Standalone mode and has a Startup movie while the audio devices on the computer are disabled, the movie will fail to play. As soon as you re-enable an audio device, ...

Runtime Virtual Texture Volume does not update correctly after World Origin shifting

Details panel is very slow when there are many items in an editable array (even if hidden) (was Tile Selection Lag within Tile Set Editor)

Selecting tiles within the Tile Sheet Editor becomes laggy after changing the size and spacing of the tile set. ...

"Current state is a conduit and will reset to ref pose" warning when using a conduit to select an entry state

AnimBlueprintLog: Error: Current state is a conduit and will reset to ref pose. This can happen if a conduit is an entry state and there isn't at least one valid transition to take. State Machine(Te ...

[CrashReport] UE4Editor_Engine!FShaderCompilingManager::LaunchWorker() [shadercompiler.cpp:1573]

This is a common and longstanding crash that has occurred since at least 4.9. The issue appears to be due to missing ShaderCompileWorker.exe in binaries, but many of these crashes occur in the vani ...

MapCheck warnings when opening a map using landscape override material

Niagara mesh renderers with a volumetric material trigger a handled ensure and are invisible in the scene

Volumetric materials on a Niagara mesh renderer will not appear in the scene and cause a handled ensure.  ...

NumPublicConnections and NumOpenPublicConnections Always Returning 0 Using Steam OSS

When attempting to get the NumPublicConnections or NumOpenPublicConnections, they are always returning 0 when using SteamOSS. ...

Global SkyAtmosphere and Clouds Issues (Ambient Light)

Ambient Light on Volumetric Clouds from Sky Atmosphere always is calculated as if the clouds are at the north pole of the planet. Using a sphere-shaped Sky Atmosphere and Volumetric Clouds causes t ...

[CrashReport] UE4Editor_SlateCore!TIndirectArray<SOverlay::FOverlaySlot,FDefaultAllocator>::DestructAndFreeItems() [indirectarray.h:444]

This is an infrequent crash in the 4.18 release. Based on individual crash details it seems frequently related to Sequencer. Users have not provided any descriptions of their actions when the crash ...