Unreal Engine Issues

Source assumes that TG_PrePhysics is the first tick group

Licensee has reported an issue with the source code and proposed a fix. The issue is that the source is assuming that TG_PrePhysics is the first tick group in all cases. Information can be found abo ...

[Audio Capture] - Editor crashes when activating an Audio Capture component when there are no active input or output devices avilable

If a device has no available input or output devices, activating an Audio Capture component will cause the device to crash. Occurs in Editor and Runtime. Assertion failed: NumTotalFrames > 0 [File:E ...

Crash on startup with a Blueprint deriving from an abstract class with a SpriteComponent

Appears to be an issue with load order and the timing of when we populate the 'ShowSpriteCommands' and 'SpriteIDToIndexMap' containers, which we assert on if they're not the same size. The original ...

Match3 Crashes on IOS and Android when Packaged using Nativized Blueprint Assets

Match3 crashes shortly after being opened on both Android and IOS devices when the experimental blueprints option "Nativized Blueprint Assets" is enabled. Verified that the issue does not occur if ...

Datasmith Tessellation does not work as operator in the visual dataprep

Temporal AA and Motion Blur Does Not Work on Manually Animated Bones

Manually animated bones of skeletal meshes do not correctly work with temporal AA and motion blur even if "Per Bone Motion Blur" is enabled. Found in 4.20 CL# 4233996 and 4.21 CL# 4234136 Unable t ...

Memory Leak In PageAllocator When Packaged

There is a Memory leak in PageAllocator when packaged. The leak can be stopped if "Landscape.Static" is used in console. Unable to test 4.19 since the provided project was 4.20, but Issue is reporte ...

Importing a Landscape Layer with World Composition Enabled is Taking All Available Memory

When importing layer information to a landscape the engine will freeze and consume all available memory. Unable to test in 4.19 due to provided project being made in 4.20. I have attached a log from ...

Skeletal Meshes do not work properly on Open GL ES 3.1 on Xiaomi Redmi 6

Skeletal meshes do not render or animate properly on the Xiaomi Redmi 6 (PowerVR GE8320) when using OpenGL ES3.1. This issue changed a bit from 4.19 to 4.20. In 4.19, the skeletal mesh seems to of ...

Oculus Touch Menu Button Input Not Received When Set In Action Mapping

The left menu button on Oculus Touch doesn't have it's input received when it is assigned to an action mapping. This looks like it stopped working after SteamVR was integrated into the engine. Foun ...