Inherited AnimBP properties not always working across editor restarts

OLD - Anim - Jan 21, 2016

In 4.11 when making changes to node properties in an animation blueprint they will not always appear to update in child blueprint instances when restarting the editor. In the attached project the l ...

Particle CPU cost highly increase at second "show" of a streaming level.

UE - Graphics Features - Feb 24, 2016

It seems that Particle CPU cost highly increase at second "show" of a streaming level. The Licensee's team sent a sample to reproduce this problem. So I put the project and wrote how to reproduce on ...

Mac Safari HTML5 Launch On - Unresponsive WASD controls while in Full Screen

UE - Platform - Mobile - Sep 19, 2016

I was testing launch on test for mac and wanted to see if the full screen works properly as there were issues with that before. I discovered that after selecting full screen, I was not able to move ...

Delete Unused Variables Does Not Remove Local Variables

UE - Gameplay - Blueprint - Oct 13, 2015

Using the Delete Unused Variables option under the Edit tab of a blueprint does not remove local variables. Instead, it displays a "All variables are in use" error. Occurs in 4.9.2 and 4.8.3 binar ...

Modifying Collections does not batch Source Control operations

Tools - Nov 9, 2016

A licensee is noticing that a heavy use of the Collections system to categorize assets is causing a lot of unnecessary source control operations and generating a lot of noise for their logs. Rather ...

Viewport Gets HMD Control Not Working with Vive

UE - Platform - XR - May 5, 2016

When using the Viewport Gets HMD Control option in the Editor Preferences, the Vive does not seem to be able to control the viewport camera, which is what would be expected. ...

OnClicked event of UMG button fires once in twice if virtual joystick is receiving input.

UE - Editor - UI Systems - Oct 14, 2015

OnClicked event of UMG button fires once in twice if virtual joystick is receiving input. Both Andorid and iOS devices are affected. This issue is found with 4.9 update. under 4.8 are fine. ...

Object set to simulate via a LevelBp will not be affected by a radial force component

UE - Simulation - Physics - Jun 7, 2017

If the objects are set to simulate physics via the details panel it works fine If the objects are set to simulate physics via a level BP the radial force doesn't work Attached video shows you how to ...

Parent Construction Script executes on child when disconnected

UE - Gameplay - Blueprint - Apr 23, 2018

If you create an Actor with Construction Script logic and create a child based on that Actor the Parent Construction Script is being executed even after disconnecting the node. ...

Light Propagation Volumes Not Affected by Emissive Area Light

UE - Graphics Features - Aug 1, 2018

The light propagation volume is not affected by a material with emissive area light enabled. Found in 4.19 CL# 4033788, 4.20 CL# 4233996, 4.21 CL# 4246589 ...