Unreal Engine Issues
Unreal Engine Issues
[Quartz] - The multiplier does not always respected on the Quartz Quantization Boundary
UE - Audio - May 13, 2022Increasing the multiplier past a certain point causes sounds on a Quantization Boundary to struggle to play at the correct time. The repro above uses 1/32, but this also repros with other values. ...
Global SkyAtmosphere and Clouds Issues (Ambient Light)
UE - Rendering - Graphics Features - Dec 3, 2024Ambient 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 ...
Multi Sphere Trace is not returning the correct Impact Location
UE - Simulation - Physics - Jan 19, 2015Multi Sphere Trace is not returning the correct Impact Location. Other AnswerHub Report:https://answers.unrealengine.com/questions/30952/multisphere-trace-fhitresult-location-same-as-impa.html ...
LIVE: The Now node (FDateTime::Now) does not return the correct time
UE - Foundation - Core - Nov 18, 2014The 'Now' node does not return the correct time if ran through a 'Print String'. (NOTE: However, the 'Utc Now' node does return the correct time.) ...
Creating a new Physics Asset will override the behavior of the previous Physics Asset inside the Phat Editor
UE - Gameplay - Aug 11, 2016Creating a new Physics Asset will override the behavior of the previous Physics Asset inside the Phat Editor. This seems to be linked to which physics asset is currently assigned to the skeletal me ...
Custom TouchInterface doesn't fade to Inactive Opacity
UE - Platform - Mobile - Jan 12, 2016Custom TouchInterface doesn't fade to Inactive Opacity User Description: Virtual Joystick always show on screen, even if Time Until Deactive is 0.00001. ...
Translucent User Interface materials do not have a thumbnail preview
Tools - Feb 15, 2018Translucent User Interface materials do not have a thumbnail preview. I do not see this issue with Translucent Surface materials. REGRESSION: No, this issue also occurs as far back as 4.17.2 ...
PrimaryAsset reference in UserDefinedStruct default values gets nulled
UE - Framework - Blueprint - Mar 6, 2026Changing the value of a parent class variable does not update after hot reload
UE - Gameplay - Blueprint - Mar 4, 2015When the value of a variable defined in a parent class is changed inside of the child class, the value is not updated in a BP of the child after hot reloading. ...
Skeleton mesh with hair strands material will lead to unnecessary draw call submissions
UE - Graphics Features - Mar 27, 2025Materials with "Used With Hair Strands" enabled will cause Skeletal Meshes to draw twice in the Base Pass. ...