Unreal Engine Issues

Proejcts with vr.InstancedStereo=true crash on Mac

Sounds like neither Multiviewport nor View Instancing (MMV) is not supported on Mac atm, and the logic in StereoAspects asserts. See attached log from a partner. ...

Nanite can assert in ValidateFixupChunk: 'Assertion failed: HierarchyNodeIndex < Resources.NumHierarchyNodes'

Reported by a licensee. More discussion in the linked UDN case. "Sometimes the WorldPartitionBuilderCommandlet will fail after encountering this error:" Error: Assertion failed: HierarchyNodeIndex ...

If any light source is deleted, and a single light has its visibility state changed in LightMixer, all the other lights in the scene that were invisible turn visible

If any light source is deleted, and a single light has its visibility state changed in LightMixer, all the other lights in the scene that were invisible turn visible. The behavior only shows after d ...

The LightMixer window is making all scene lights visible once you toggle the visibility of a single light

The LightMixer window is making all scene lights visible once you toggle a single light as visible. Any light source (except SkyLight) will be turn visible once a single light is made visible using ...

Save notification stays in lower left corner when editor is minimized

A user has reported that the saving notification sticks on the desktop when the editor is minimized. When you maximize the editor, the saving notification does disappear.I have not been able to repr ...

Importing FBX from blender causes crash

Importing FBX model with Shape Keys crashes editor. This crashes in the SDK so we dont have control over it. Given that this is one of the first things we do on import it is unlikely we are corrup ...

Typo in description of SkySphere Horizon Falloff

The description for Horizon Falloff is misspelled, it says 'Horitzon' instead of 'Horizon'. Edit MattK: This is a content issue because this is a blueprint data variable. ...

PhysicsBall BP not updating location with Collision volumes

PhysicsBallBP is unable to teleport via a collision volume (with either SetActorLocation or Teleport node). Regression: Error is not present in 4.14.3 but is present in 4.15.P3 Console error descr ...

Android iterating with Launch On in always recompiles android_native_app_glue.c and UELinkerfixups

Copying values of an array created through C++ does not copy all values

Copying values of an array created through C++ does not copy all values, only the first value is copied over. This is different than an array that is created in blueprints when those are copied they ...