Unreal Engine Issues

Exposure Compensation in PP Has No Effect in Mobile LDR Mode

Tested in 4.19, 4.20 Preview, and 4.21 Main.  Per User: Lack of the ability to tune-up the Exposure Compensation makes the scene lighting look visually incorrect, especially in fully baked environ ...

Textures That Are Not Visible in Viewport Use Low Res Mip During Play in Selected Viewport

I am unable to test the User-provided sample project in any engine version other than 4.19.2.  Per User who reported issue: Mips for textures that are not visible in the viewport but get showed du ...

Importing Alembic/ABC File with Large Number of Morph Targets Breaks Morph Targets

When importing abc files with several morph targets (as a skeletal mesh), some morphs do not import and the ones that do are distorted(see screenshots and attached project) -Number of morphs is no ...

Copy Pose From Mesh Node Does Not Preview in Sequencer

Copy Pose From Mesh node does not affect the animation when previewing in Sequencer. This works when played in the editor. ...

iOS fails to compile: undefined symbols "_OBJC_CLASS_$_ARImageAnchor", etc

FBX reimport workflow: Reimport can't import new added Material

Volumetric Fog causing light to get darker after each lighting build

With dense volumetric fog enabled it will cause the lighting to get darker each build you do. ...

Cannot access properties of the FAppleARKitFrame struct from within a Blueprint

It is not possible to access properties of the {FAppleARKitFrame}} struct within a Blueprint. The struct itself is exposed as a BlueprintType, but none of its properties are also exposed. ...

Camera Actor variable (array) no longer editable in Blueprints

This is a regression from 4.19. In 4.19 you were able to change the actor assigned to the array element in a Camera Actor variable. In 4.20 and 4.21 the field is grayed out and displays None with a ...

Landscapes Do Not Recognize Material Layers if Blend Assets Are Added in Material Instance

*Developer's Note*  - Material layers are not landscape layers and are not expected to interact. Not sure if this is a bug, but depending on how a layered material is created, its layers may not ...