WindDirectionalSourceComponent.h has a meta edit condition that, by referencing an undefined property (bSimulatePhysics), throws an error

UE - Framework - Apr 15, 2025

WindDirectionalSourceComponent.h has a meta edit condition that, by referencing an undefined class property (bSimulatePhysics), throws an error in the logs: LogEditCondition: Error: EditCondition pa ...

Blueprint asset tabs move around weirdly when you navigate between them with too many open

UE - Editor - Workflow Systems - Apr 3, 2025

The "parent class type" text changing size causes the tabs to shift around a lot when you have a lot of them. We need to figure out a better place for this text to avoid the issue ...

Return FGoogleARCoreXRTrackingSystem::OnGetARTexture with YCbCr colour conversion

UE - Platform - XR - Apr 2, 2025

Either directly return the converted image (if we need it everywhere), or, convert it in ARUtilities/Materials/M_ScreenSpacePassthroughCamera ...

Skylighting on distant objects causes severe flickering with Lumen

UE - Graphics Features - Lumen - Mar 31, 2025

Lighting on distant meshes flickers when using Lumen and Skylights. Turning Lumen off and lighting from the skylight is stable. Turning off Lumen screen traces also lowers the amount of flickering ...

Distance Field AO from Moveable Skylight (non-Lumen) invalidates AO incorrectly with a screenspace offset to the right of moving objects

UE - Graphics Features - Mar 25, 2025

When Global Illumination is set to “None” in the project settings the ambient occlusion does not correctly render shadows for moving objects. This has been observed in versions 5.4 and above. ...

Resetting material instance parameters to default value does not update the appearance of the object that the material is applied to

UE - Rendering Architecture - Materials - Mar 10, 2025

When a material instance with exposed parameters is applied to a landscape; the parameters set to a new value and then reset to back the default value, the landscape does not respect the new default ...

Metdata 'ForceAsFunction' does not prevent conversion to event

UE - Framework - Blueprint Editor - Mar 6, 2025

Quote from the UDN: This is easily fixed with a conditional in bool FBlueprintEditor::ConvertFunctionIfValid(UK2Node_FunctionEntry* FuncEntryNode) which we've done locally, but should probably be ...

Iris - dynamically spawned actor components call BeginPlay before reading initial replicated properties

UE - Networking - Iris - Feb 27, 2025

The same issue reported in [Link Removed] is also present in Iris. ...

Global Invalidation causes CommonAnimatedSwitcher to flicker after animation completes

UE - Editor - UI Systems - UMG - Feb 19, 2025

The common animated switcher will currently flicker for one frame when its transition animation completes if global invalidation is enabled. This appears to be caused by a visibility change (HitTest ...