Unreal Engine Issues

bPersistentLines is not respected by DrawDebugLine

It looks like the line's lifetime is forced to the default line lifetime of one second if the provided lifetime is less than zero, which would be the case if calling the function with just enough pa ...

XboxOne D3D12 Graphics Artifacts

Multiple licensees are experiencing this problem. The repro should look like this initially: [Image Removed] But then over time will degrade overtime into something like this this, most likely cau ...

Virtual Bone effect is lost after re-importing mesh

After setting up a Virtual Bone on the skeleton and having it drive a Skeletal Control Node in an Animation Blueprint. Reimporting the skeletal mesh will cause the setup in the Anim BP to revert bac ...

Stationary Spot Lights in Forward Rendering Incorrectly with PerVertex NonDirectional Translucency

Stationary Spot Lights in Forward Rendering cause artifacts when lighting transluceny set to Volumetric PerVertex NonDirectional. When the camera is moved around the object, the lit vertices flicker ...

4.23 UpdateGrass took twice time than 4.22

UMG Crashes When Using "Create Dynamic Material Instance" With An Optional Name Twice

When using an Optional Name parameter in Create Dynamic Material Instance while using the same Optional Name twice in UMG the engine crashes. I have tested this in a actor blueprint that applies th ...

Networking Engine Tests fail for NotifyParamCorrect on Client

The following errors occur when running the networking engine tests with 2 clients and a dedicated server. LogFunctionalTest: Error: Assertion failed: 'EngineTestNetActorComponent bRepArrayAddNotif ...

Ocean does not completely fill water zone in certain circumstances

Issue reported in [Link Removed] by [Link Removed] 1. Add one component to the 8K Landscape. [Image Removed] 2. Adding Ocean will not render correctly. [Image Removed] [Image Removed] These ca ...

Anim Graph will hang if the Draw Debug Sphere and Set node are connected and compiled

anim blueprint hangs when compiled. Probably a cyclic issue when compiling. A workaround is to add a delay of any time between the set node and the Draw Debug Sphere node. Repros in the following v ...

Objects animated in Sequencer fail to trigger collisions against stationary characters with character movement components

When an object, such as a cube, is animated in sequencer and that object's path intersects a stationary character with a character movement component, the object will pass through the character with ...