Unreal Engine Issues

Native struct types that declare one or more non-UPROPERTY fields are not initialized with the default value from a modified Blueprint CDO.

Dynamically-spawned instances of a Blueprint class go through an optimized property initialization pass (see UBlueprintGeneratedClass::BuildCustomPropertyListForPostConstruction() and InitProperties ...

Sprite fails to edit based on UV Source Texture Region, when attempting to bulk edit via Bulk Edit Property Matrix.

Sprite fails to edit based on UV Source Texture Region, when attempting to bulk edit via Bulk Edit Property Matrix.  User was following along to this Epic tutorial: [Link Removed] However, the e ...

Show collision can't display Complex Collision Mesh

"viewmode collisionpawn" and "viewmode collisionvis" can not display complex collision meshes as well. ...

Restore state on animation in level sequence will stop all montages

It looks like UnbindFromSkeletalMeshComponent stops all montages. This is called when the animation section restores its state.  https://udn.unrealengine.com/s/question/0D52L00004lun3ySAA/restore ...

Unable to input with IME in widget component.

Unable to input IME text in widget component, but able to input IME text in textbox like UMG designer.  It works fine until 4.21, however it wasn't able to work after 4.22. Workaround: void FSla ...

Niagara viewport does not adjust exposure when set to auto

The Niagara viewport does not adjust exposure when using the Auto setting for exposure. This is especially pronounced when using physically based values for skylight intensity.  ...

ProRes 4444 files cannot be played on MediaPlayer when RHI is DirectX 12

This file can be used if you have enabled the Apple Pro Res Media plug-in. This can be played when RHI is set to DirectX 11, but not when changed to 12. The file being played is a ProRes 4444 vide ...

Light shaft smear color due to TAA bleeding

See https://udn.unrealengine.com/questions/553031/volumetric-fog-bug.html?childToView=554676#answer-554676 ...

DFAO has ugly result on Hair Material with Custom Tangent

Particle System Components don't inherit owner's time dilation

This is a regression introduced by the particle system manager. It does not account for the owning actor's time dilation when ticking the particle system components.  ...