Unreal Engine Issues
Unreal Engine Issues
[Dynamics Processor][Audio Bus Sidechain] - Audio Bus Sidechain doesn't function the second time a sound is triggered
UE - Audio - Audio Bus - Sep 2, 2021Retriggering 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 ...
FKeyHandle internal static atomic counter can overflow on long running games depending on usage pattern
UE - Anim - Sep 24, 2025Structure FKeyHandle stores an internal index, which is initialized from a static atomic counter in the default constructor: +----- FKeyHandle::FKeyHandle() { | static std::atomic<uint32> LastKey ...
The 'Add New Key' button does not function within the Actor Sequence Editor within an object that has the Actor Sequence Component.
UE - Anim - Sequencer - Jul 26, 2018The Actor Sequencer Timeline appears to not be able to correctly recognize the variables manipulated within the viewport. Thus, when attempting to add a keyframe after moving a component, within the ...
Timer does not work in Object Class Blueprint
UE - Gameplay - Blueprint - Oct 10, 2017After 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 ...
Interface cannot be re-implemented after removal from blueprint
UE - Gameplay - Blueprint - Sep 1, 2015If an interface is removed from a blueprint and an interface function is transferred to a local function, the interface cannot be re-implemented in the blueprint. ...
[MAC] Editor keyboard bindings do not allow overriding already bound shortcuts
UE - Platform - Apple - Sep 9, 2015When 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. ...
Lightmass Build Hanging at Specific Percentages
UE - Graphics Features - Sep 11, 2015Lighting 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 ...
Add ENGINE_API to UDirectionalLightComponent
UE - Gameplay - Sep 17, 2015As 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 ...
(global distance field not available in shadow pass) Lighting Artifacts Appear When Using Distance To Nearest Surface With World Position Offset
UE - Graphics Features - Jan 20, 2017When using "distance to nearest surface" node with WPO there are cases where the engine will shade the object incorrect. The attached project reproduces one of these scenarios. It appears as though ...
Lightmass Build Hanging at Specific Percentages
UE - Graphics Features - Sep 4, 2015Lighting 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 ...