When using Lighting Scenario, loading order will affect how it's applied to the instances

Tools - Foliage - Mar 7, 2019

When using Lighting Scenario, loading order will affect how it's applied to the instances, resulting in corruption if content is loaded after the lighting scenario ...

SteamVR Stereo layers are using incorrect orientation conversion

Virtual Reality - Mar 6, 2019

"SteamVR stereo layers are using the wrong coordinate system conversion and are being improperly rotated. All other conversions in the SteamVR module are using the correct one, just this particular ...

AccumulateCurveMetaData unnecessarily marks the package dirty

Anim - Mar 5, 2019

AccumulateCurveMetaData makes calls to MarkPackageDirty even when the data hasn't changed. ...

Gamepad input affects multiple game instances at once, due to not needing focus.

Tools - Slate - Mar 5, 2019

Since Gamepad input works without needing focus (which was added in 4.9 with UE-14030), a Gamepad's input will also affect all instances running on the same computer. Regression?: No This occurs in ...

Performance drop in Orthographic views when Visualize->Volumetric Lightmap

Rendering - Ray Tracing - Mar 4, 2019

Severe performance drop when when entering Orthographic view, but only when Volumetric Lightmap is selected. ...

UWorld::CleanupWorld causes issues with sublevels when changing maps after building lighting

Tools - Mar 1, 2019

A licensee has reported that UWorld::CleanupWorld is causing issues with assets in Sublevels if you build lighting on the parent level, save all of the maps, and then change to another level. The as ...

High bandwidth usage on listen servers, even with bare minimum replication

Networking - Mar 1, 2019

UDN user claims that in an empty level, when using a listen server, bandwidth is higher than expected - ~5.5KB/sec for two connections, and appears to be framerate dependent. Has posted screenshots ...

Creating a new C++ Basic Code Project, based upon a deleted With Starter Content enabled

Tools - Feb 28, 2019

Upon creating a new C++ Project called "MyProject" with starter content enabled, if you delete the project folder from the finder, then re-create a new C++ Project under the same name "MyProject" wi ...

RepLayout can hold onto hard references to owning objects, preventing them from being destroyed.

Networking - Feb 28, 2019

RepLayouts are associated with an Owning Object, which may be a Class, Function, or Struct. RepLayouts will only be cleaned up when the Owning Object is no longer valid. RepLayouts hold references t ...

CCD can produce incorrect results at low frame rates

Physics - Feb 27, 2019

The attached project has a fixed frame rate of 30fps with a simulating CCD cube above a with a full restitution floor. The cube has an odd rotation, such that it impacts the floor at a single point ...