Unreal Engine Issues

Fbx Exporter: If 2 sections use the same material, one section will have a wrong material in the fbx.

Lumen artifacts on splitscreen during camera cuts

A UDN licensee has pointed out that they are seeing unresolved Lumen reflection artifacts when they are running their game in split-screen mode. A video of this behavior is found in the Related tab ...

Issue where some colors are missing in some materials created by importing MaterialX files

From user: Comparing UE, Arnold, Vray and MaterialXView that have MaterialX files imported, some materials of UE clearly look different from other renderers. Looking into this issue, we found that ...

Physics Constraint returns incorrect values for Swing1, Swing2, and Twist

Tested in //UE5/Main CL#20966071 Tested in //UE4/Release-4.27 CL#18319896 Physics Constraint returns incorrect values for Swing1, Swing2, and Twist. ...

Iris - Destruction of initially dormant actor not replicated to clients

Without Iris enabled, UNetDriver::NotifyActorDestroyed will handle creating destruction info for dormant actors, including any initially dormant, statically placed actors. However, this path seems t ...

[Oscilloscope][Analyser Probes] - Analyser graph doesn't update smoothly when observing pin outputs

[Image Removed] ...

[MetaSounds]- Attemping to copy and paste inputs between graphs can cause nodes with duplicate pins

Video example: [Link Removed] Occurs in 5.2 as well as 5.2. ...

Blueprint Add Custom Event unable to resolve delegate signature inside a split struct

This issue occurs when a static function is created and has a struct parameter that has a delegate exposed to blueprint. When using the helper function in blueprint after having used "Split Struct ...

Sprites using a lit material render black in orthographic views

Sprites using a lit material render black in Orthographic views. Sprites are rendered as expected in Perspective view. ...

Scale is 0.0f when editing a curve with Animation Sequencer.

There are conditions. ・EnableRootMotion is true. ・Adidive Anim Type is Mesh Space or Local Space. https://udn.unrealengine.com/questions/436446/%E7%89%B9%E5%AE%9A%E6%9D%A1%E4%BB%B6%E3%81%AE%E3% ...