Unreal Engine Issues
Unreal Engine Issues
Stationary Directional Lights not Rendering Dynamic Shadows on Mobile
UE - Platform - Mobile - Jan 21, 2016As the title suggests, dynamic shadows on mobile when using a stationary directional light are not appearing at all when deployed to the device or when viewed in the mobile previewer. The odd part ...
Custom Profiles Don't Update Maps To Cook When One Is Deleted
Tools - Feb 10, 2020If you delete a map while it is marked to be cooked in a custom profile, then run the custom profile the map won't be deleted from the profile .ulps. I wasn't able to launch using the new custom pr ...
GAS: GameplayEffect with RemovalTagRequirements in networked play triggers FScopedActiveGameplayEffectLock ensure
UE - Gameplay - Gameplay Ability System - Nov 3, 2023Reported by multiple users. When in a networked session a GameplayEffect is automatically removed due to:a tag being added that's not allowed, or (TargetTagRequirements.RemovalTagRequirements.MustHa ...
Slow Actor ContainsDataLayer / HasDataLayers
AActor ContainsDataLayer Is Slow: Navigation builds are heavily slowed down by TObjectPtr to TSoftObjectPtr conversions when checking if DataLayerAssets contain Users discovered a huge time los ...
Nvidia dedicated graphics card causes menus in the editor to duplicate
Tools - Jun 17, 2015When using a laptop with an added in graphics card that's Nvidia, the menus in the editor duplicate. However, if you force the editor to use the integrated graphics card, it does not occur. From th ...
UMG Retainer Box renders incorrect colors with Color Vision Deficiency enabled
UE - AI Workflows - UI Systems - UMG - Aug 27, 2025When using a Retainer Box in UMG with Color Vision Deficiency enabled, the content inside the Retainer Box is rendered with incorrect colors compared to the rest of the UI. This bug is present in UE ...
UMG Widget Hierarchy auto-expands on simple changes causing frustration and a slow work flow
UE - Editor - UI Systems - Oct 10, 20161. Create a hierarchy in UMG that has a couple layers deep of children such as vertical boxes that have multiple children that are vertical boxes, widget switchers .. 2. Collapse all children in th ...
[CrashReport] UE4Editor_Engine!FPhysScene::SyncComponentsToBodies_AssumesLocked() [physscene.cpp:1271]
UE - Simulation - Physics - Dec 1, 2017This is a common crash in 4.18 and 4.18.1. The callstack shares similarities to [Link Removed], although that has been confirmed fixed in 4.18. Included in the same crashGroup are also a few Ensur ...
A welded hierarchy blocks updates to collision settings on all but the root primitive. Calling SetCollisionResponseToChannel on the children won't work.
UE - Runtime - Simulation - Nov 22, 2024A welded hierarchy blocks updates to collision settings on all but the root primitive. Calling SetCollisionResponseToChannel on the children won't work. The licensee noticed that IPhysicsProxyBase* ...
Inaccurate Panning on Tap Delay Submix
UE - Audio - Oct 5, 2021The panning in the Tap Delay Submix Effect does not always match its assigned Pan in Degrees value. Specifically, the left and right side appear to be reversed on Stereo setups. In addition, in 5.1 ...