Unreal Engine Issues

Hierarchical LODs used with Precomputed Visibility cause actors to occlude that should not behind translucent materials

When using Precomputed Visibility in conjunction with HLODs and translucent materials without them culling actors occluded by the translucent material. The example gif attached shows that the base ...

UMG Throbber is not showing in project when using 'Set Number of Pieces' node off of Event tick

If you add a throbber to a UMG Blueprint and use the Graph of the Blueprint to change the 'Set Number of Pieces' and use 'Event Tick' to tick the widget, the throbber widget will not appear on scree ...

Sound Cues report incorrect MaxDistance when using SoundNodeParamCrossFade

Short duration sounds (< 1.0 seconds) trigger a check on max distances by sound nodes in a sound cue. Sound cues which use SoundNodeParamCrossFade are reporting 1.0 as the max distance and thus resu ...

Issue with Finish Transaction after an app has crashed.

Editor crashes with 2 or more Clients when spawning in a Blueprint created from a Static Mesh using the Blueprint/Add Script button

Editor crashes with 2 or more Clients when spawning a Blueprint created from a Static Mesh using the Blueprint/Add Script button. Blueprints created from Static Meshes using other methods do not cau ...

User receiving crash when compiling & saving blueprints on Mac

User receiving crash when compiling & saving blueprints. Log Error: (SIGSEGV: invalid attempt to access memory at address 0x0) User also supplies a Stack Trace Image in his answerhub post. ...

Separate Translucency for Particles Breaks when Scene Color is used

When using Scene Color in a Particle System's Material with Separate Translucency checked true, all Particles with Separate Translucency checked true placed in the level with the Scene Color Particl ...

Delegation issue with copied instances of a Trigger BP that is based off of the StaticMeshActor

Delegation issue with copied instances of a Trigger BP that is based off of the StaticMeshActor parent class. If bp Trigger A is placed into the level and then 2 copies are made (B & C), when C i ...

Adaptive Tessellation is not updating correctly on moving mesh

User who has been working with an Ocean Shader for some time noticed that on updating to 4.8 Previews, the Adaptive Tessellation is not updating correctly when the mesh displaces from out of camera ...

Navigation system not handling component hierarchies properly

Lots of details on the related UDN thread. In short, Navigation System is not handling properly deep component hierarchies. I've added a test map for this to AIProject, it's ComponentHierarchyOnNa ...