Unreal Engine Issues

Unloading a level instance by data layer creates empty folders in the top level of the outliner

Reset to default behavior for arrays is inconsistent about updating customized struct headers

The behavior for resetting the default for customized struct properties is inconsistent and needs to be reviewed and fixed. Currently we see this behavior:In non-array properties, the header will be ...

Keep Simulation Changes Applies to Incorrect Actor with Sublevels

When setting properties and saving simulation changes, EditorUtilities::GetEditorWorldCounterpartActor and EditorUtilities:GetSimWorldCounterpartActor functions seem to get the wrong actor. Actors i ...

Inconsistent media texture new style output state across the engine

A simple search for `NewStyleOutput = true` will reveal the many instances where this flag is already forced on, including media plates and media bundles. This however means that we have incompatib ...

Movie Scene Capture - DX12 Render Artifacts and Delay

If using the Legacy renderer (Movie Scene Capture) with DefaultRHI DirectX12, there's new delay and also some frames get weird artifacts.   However, the delay and artifacts do not appear when using ...

VerboseCookerWarning warnings: Saving object into cooked package %s which was created at cook time, Object Name UniqueObjectNameForCooking_0, Full Path %s, Outer class %s

Creating objects at cook time that are exported into the cooked package is a possible cause of indeterminism, and therefore we have banned it in engine classes and will fire a warning about it. Cur ...

Gameplay effect modifier tag requirements are not checked for Instant/periodic effects

When creating a GameplayEffect, modifiers can tag requirements for the Source and Target tags. For Duration gameplay effects, these tag requirements are checked from FAggregatorMod::UpdateQualifies ...

Editor becomes unresponsive when selecting BP_FirstPersonChracter0 while Playing in Editor with specific settings

This is a regression. Testing //UE5/Release-5.1 CL23901901 When selecting BP_FirstPerconCharacter at run time in a project that has C++, Quality as Scalable, and Ray Tracing enabled the editor free ...

Spawn and Register Tab and Get ID Produces Unbounded Length IDs

Spawning Editor Utility Widgets via Spawn and Register Tab and Get ID inside another widget creates unbounded length IDs that get progressively longer with each subsequent spawn, as the ID is append ...

Inconsistent Behavior in Hiding Child Actors

Pressing the 'h' key only hides the root actor and none of the children, unlike the scene outliner where clicking the eye icon hides the root actor and all children. This appears to be because edac ...