Unreal Engine Issues

Lighting is unbuilt after reloading a level that has a actor with static mesh components

For a specific level with a simple BP actor that contains multiple static mesh components, lighting gets unbuilt after reloading the level, even when there is no change in the level. "LogStaticMesh ...

Skeletal meshes with recently generated LODs will not change LODs in viewport

REGRESSION No Skeletal meshes that have recently had LODs auto-generated in the editor will not change LOD levels in the level viewport. This only occurs when the user is NOT playing or simulating ...

Behavior Tree marked as changed on open when containing Run Behavior node

When a behavior tree contains a Run Behavior node, opening the behavior tree marks the asset as "modified" and users would get asked by the editor if they want to save it even when there has been no ...

Can't move pivot on planes.

Vertex snapping doesn't seem to work well for certain geometry setups. This is most noticeable in planes or other flat geometry. ...

Fill tool does not work on BSP

 The fill bucket tool under foliage does not work with BSP surfaces. ...

StrategyGame build failure from with XCode9

Did not occur when building the 3rd Person Code template from Windows to XCode 9. Also did not occur when building StrategyGame from Windows to XCode 8. This hasn't yet been tested natively on a Ma ...

WorldContextObject is null in BP function library

There is a spelling error in the tutorial for blueprints. The word "contains" is written as "containes."

There is a spelling error in the tutorial for blueprints. The word "contains" is written as "containes." ...

Linux: SIGTERM handler can deadlock

Handling SIGTERM can deadlock because RequestExit() can log stuff. If we happen to be in the malloc at that time of receiving the signal this is going to deadlock the process. In general, we should ...

Changing the Level Streaming method will remove Levels from folders they were placed in

Changing the Level Streaming Method of a Level thats inside of a folder will remove it from the folder. Occasionally once all Levels have been removed from a folder, the folder will delete itself. ...