Unreal Engine Issues
Unreal Engine Issues
Skylight Leaking Tint in Reflection
UE - Graphics Features - Oct 10, 2025From 5.6 onwards, Skylight Leaking is much stronger in reflections than in the world. Also tested on //UE5/Release-5.6, CL 45232827 ...
"Build All Levels" does not re-AddNavigationSystemToWorld
UE - AI - Navigation - Feb 28, 2024The Build All Levels editor action cleans up the world's NavDataSet (UNavigationSystemV1::NavDataSet) as pre-rebuild world cleanup by calling: SetNavigationSystem(nullptr); inside UWorld::Cleanu ...
Crash when adding foliage instances to unloaded IFA
UE - World Creation - Worldbuilding Tools - Foliage - Aug 31, 2023Ran into a crash when trying to programmatically add foliage to a large WP level with some unloaded IFAs. ...
MRQ rendering crashes when there is an empty audio track
UE - Virtual Production - Tools - MRQ - Aug 25, 2025Fix up IOS errors calling UI API from non-UI threads
UE - Platform - Apple - Jul 27, 2020Motion Warping component disappears on Editor restart or when swapping engine versions.
UE - Anim - Gameplay - Nov 19, 2024Motion Warping component is disappearing on Editor restart or when swapping engine versions. When this occurs, the BP has the following Compiler Results messages: Component class is not set for'Mot ...
Submix Level's minimum changes from -96dB to -60dB after making any changes to value
UE - Audio - Submixes - Mar 22, 2023Reproduces 3/3 times. Issue does not occur in //UE5/Release-5.1 - CL 23901901 Binary. Confirmed Regression. ...
Getting Fullscreen or Windowed Resolutions doesn't fully execute on Linux
UE - Rendering Architecture - RHI - Oct 28, 2019When using "Get Supported Fullscreen Resolutions" on UE when built with Vulkan, no values are printed out. This is an issue with any platform that builds UE with -vulkan, not just Linux. In Engine ...
GAS: FActiveGameplayCueContainer::RemoveCue crash while iterating removals when consecutive Cue tags are conditionally added and the conditional effects removed in ascending order
UE - Gameplay - Gameplay Ability System - Nov 4, 2025When removing gameplay effects by tag, if the tag that is being removed has other tags that are dependent on it in a cyclical way an "array out of bounds ' error can be triggered. ...
Shadow artifacts on translucent objects when using the setting Cast Dynamic Shadows As Masked
UE - Graphics Features - Mar 20, 2025Flickering shadow artifacts can be seen with translucent mateirals with "Cast Dynamic Shadows As Masked" enabled. Please note that the artifacts disappear when switching from virtual shadow maps to ...