Previewing Node in Material Editor Produces Unexpected Output with DX12

Rendering - May 16, 2018

Per Licensee: Since we switched to DX12 we started to see strange behavior in material previews. I was able to reproduce the problem in UE 4.19 vanilla as well. We usually have to force recompilin ...

Crash in editor after disabling AISystem in Worldsettings

Gameplay - AI - May 16, 2018

After disabling the World Option bEnableAISystem, clicking with the right mouse button on the asset browers (in an empty place) casues the editor to crash. ...

When creating a new widget that derives from an existing widget it will not show up in the palette hierarchy after restarting the editor

Tools - UMG - May 15, 2018

When creating a widget based on a widget that is available by default in the editor it will not show up in the palette once the editor has been closed until the widget itself has been opened during ...

Navmesh generation doesn't work with Retopologize tool

Gameplay - AI - May 15, 2018

When a Landscape is edited with the Retopologize tool, Dynamic Navmesh is no longer generated. This was also tested with Static Navmesh and yielded the same results. ...

Reflections Not Behaving As Expected in Splitscreen

Rendering - May 15, 2018

In splitscreen, Player 0 view influences reflections for other player views. A user submitted the included test project showing the issue, and I have reproduced on 4.18.3 as well as 4.19.2 (see Spli ...

Animation Track in Shot Does Not Animate With Evaluate Sub Sequences In Isolation Enabled

Sequencer - May 15, 2018

When Evaluate Sub Sequences in Isolation is enabled in a shot, other shots inside the same sequences only play the transform track and do not play their animation track Does not affect 4.18.3 Relat ...

Casting to ActorComponentOwner inside of nested Inline instanciated Blueprints owned by ActorComponentOwner disappear after Editor restart.

Gameplay - Blueprint - May 15, 2018

A set of objects which can be instantiated Inline in the Editor that contain an array of References to their children that have nested Blueprint objects inheriting from a Native Base Class can cause ...

Missing some UBX collisions after imported from FBX

Tools - May 15, 2018

If move those UBX collision closer to the visual mesh, it kind could fix the problem, but still wondering if it's a bug or limitation; what's the reason behind it and how artist could avoid those pr ...

Widget clips incorrectly when added at runtime

Tools - UMG - May 14, 2018

When adding a widget at runtime the widget it appears to clip in correctly. If the widget is more than half way off the screen, the entire widget disappears. ...

Can't disable collision on landscapes

Tools - Landscape - May 14, 2018

Disabling collision on a Landscape doesn't work when using the Collision Preset 'NoCollision'. The Landscape still generates collision on Static and Skeletal meshes. ...