Landscape: When updating Physic Material on a landscape layer info object, the physic material is not propagated correctly

Tools - Landscape - Apr 4, 2019

This will result in not getting the Phys Material when doing collision query. Info from the UDN "Having stepped through the ULandscapeLayerInfoObject::PostEditChangeProperty I can see that the U ...

Adding an entry to arrays within Details Panels automatically collapses expanded entries

Tools - Material Editor - Apr 3, 2019

Adding an element to an array in the Material Editor automatically collapses all expanded elements in the array. I've successfully reproduced this issue with the following nodes:LandscapeGrassOutput ...

Adding a call to the parent function when executing an inherited multicast event on a client results in the events being called on the client twice

Gameplay - Blueprint - Apr 2, 2019

A user has reported that adding a Parent call to an inherited multicast function causes the event to be called twice if it is executed on a client. Regression?: No This occurred in 4.20 Link to te ...

Refraction does not display properly on Android devices

Platform - Mobile - Apr 2, 2019

A user has reported that Refraction does not affect Translucent or Masked materials at all on Android. It is also limited in how much it affects Opaque materials. Regression?: No This has been test ...

Comments on Blueprint Interfaces can´t be moved/deleted

Gameplay - Blueprint Editor - Apr 1, 2019

When a comment box is added in a Interface blueprint, it cannot be moved or deleted. ...

Dynamically Created Render Target Does Not Work in Packaged Project

Rendering - Mar 27, 2019

Dynamically created render targets do not work as expected when packaged for windows. If it is replaced with a static render target, it works fine. Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 ...

Niagara GPU Emitter Flickering at Certain Angles When the System Origin is Occluded

Rendering - Niagara - Mar 25, 2019

Niagara GPU Particle Flickering at Certain Angles When the System Origin is Occluded. Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 Preview 6 CL# 5439949, and 4.23 CL# 5533539 ...

ForceActorRelevantNextUpdate will only force an update on the first connection

Networking - Mar 21, 2019

The ForceActorRelevantNextUpdate will only trigger an update on the first connection in the list. Note that the ForceActorRelevantNextUpdate does not work on dynamic actors since their ActorChannel ...

Niagara System Doesn't Update Mesh Renderer If Static Mesh is Changed in the Emitter

Rendering - Niagara - Mar 20, 2019

The Niagara System doesn't update the mesh renderer If the Static Mesh is changed to an Imported Mesh in the source emitter Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL#  5470758 ...

Levels lose folder hierarchy in Levels window on streaming method change

Tools - Mar 19, 2019

In the Level Window, Sub Levels which are nested inside of a folder will lose their hierarchy upon changing their streaming methods. ...