Unreal Engine Issues
Unreal Engine Issues
Setting Fullscreen Mode to "Fullscreen" results in Crash when using 4.23 from source
UE - Rendering Architecture - RHI - Oct 11, 2019Changing the screen settings to Fullscreen through code or blueprints results in a crash. This only happens in the source version of 4.23 and does not occur in the binary version of 4.23. I have att ...
Editor Crash when changing Default Properties of a TArray of UStucts containing an InlineEditConditionToggle property in Blueprint Parent Class
UE - Editor - Workflow Systems - Apr 5, 2024This bug causes an editor crash. This crash occurs when changing the default values of a UStructs properties that are used as EditConditions, when they are set to InlineEditConditionToggle within a ...
Global SkyAtmosphere and Clouds Issues (Ambient Light)
UE - 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 ...
Navigation mesh is generated ignoring collision for ISM added by construction script
UE - AI - Navigation - Apr 15, 2025When opening a map with ISM in place, NavOctree is not updated because the ISM bounds are assumed invalid and the geometry is not taken into account in the navmesh build. The following log output i ...
RVT that is set up following the Quick Start Guide shows a flat black texture
UE - Graphics Features - Mar 2, 2021A user has reported on salesforce that their RVT material is returning black. After following the publicly available Epic Quick Start guide online I encountered the same issue. The ticket was repor ...
Setting a float variable to a value that's beyond the maximum value of a float causes the editor to become unresponsive
UE - Editor - UI Systems - Localization - Nov 12, 2021When inputting an extreme large value into a float variable that exceed the maximum value of a float, the engine then becomes unresponsive. I tested this with an integer variable and this did not oc ...
Adding a StaticMeshComponent pointer to a derived StaticMeshComponent class has inconsistent behavior
UE - Gameplay - Components - Aug 6, 2015Adding a UStaticMeshComponent pointer to a class derived from StaticMeshComponent allows for two meshes to be set by a single component. Setting two meshes inside a blueprint this way will only allo ...
Class Defaults do not show Texture variables when called from other blueprints
UE - Gameplay - Blueprint - Sep 30, 2015If class defaults are accessed in an actor blueprint from another blueprint, texture variables will not appear in the class defaults list on the "Get Class Defaults" node. ...
Shadows cast from static meshes are not appearing on characters in Mobile Preview
UE - Graphics Features - Oct 24, 2014When placing a Static mesh into a level that will cast a shadow and building lighting, no shadow will be shown on a character when walking through its shadow ...
Math Expression nodes cause packaging to fail.
UE - Gameplay - Blueprint - Oct 24, 2014When using a math expression node within a blueprint, the project will fail when packaging. ...