Unreal Engine Issues

Volumetric Lightmaps Persist When Opening Different Level

When moving between levels with built lighting volumetric light maps persists between levels. Workaround: Load the same level twice. Found in 4.24.2 CL#11100242 Reproduced in 4.26 Main CL#11574810 ...

[Feature Request] Add material node or function to easily support AR passthrough camera

See the UDN link. This is currently possible with some material work, but should be made more robust to automatically look up the passtrough texture resolution and to deal with apps deployed in por ...

Sphere Trace Distance Field GPU function hides necessary Collision DI input

The collision DI input is a hidden input, but is necessary for compilation. The input node should likely be marked as required, not hidden.  ...

Volumetric fog rendering gets cut off at the apex for some spot lights when viewed from certain angles

Fix is found in licensee’s pull request:https://github.com/EpicGames/UnrealEngine/pull/10333/files ...

Server using -useperfthreads command line causes crash if rendering thread is required for function execution

[Dynamics Processor][Audio Bus Sidechain] - Audio Bus Sidechain doesn't function the second time a sound is triggered

Retriggering a sound using an Audio Bus as a sidechain on a Dynamics processor seems to not uses the sidechain. The sidechain will start working again if it's reset on the Dynamics Processor effect ...

Timer does not work in Object Class Blueprint

After creating a timer in an Object Blueprint, timer is not called as intended. "InitObject" Event fires but "Call Function" function does not Reproduced in: 4.17.2 CL 3658906, 4.18 P3 3676890 Un ...

[MAC] Editor keyboard bindings do not allow overriding already bound shortcuts

When entering "ALT+B," to rebind keys to a function, red warning flashes for 1 frame, does not allow function to be rebound to this key combination *See attached image. ...

Add ENGINE_API to UDirectionalLightComponent

As per forum post all other light component clases (PointLightComponent, SpotLightComponent etc) all have ENGINE_API but DirectionLightComponent does not. If only for consistency it should but also ...

Lightmass Build Hanging at Specific Percentages

Lighting will build indefinitely in certain circumstances and can be verified in Swarm Agent that it will continue to process the maps even though the log shows it has completed. This is happening i ...