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. ...

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

UE - Anim - 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 ...

Disabling "Apply Fogging" Doesn't Work for Translucent Material with Volumetric Fog

UE - Graphics Features - Jul 6, 2018

Translucent materials with "Apply fogging" disabled will be affected by volumetric fog.  Found in 4.19 CL# 4033788, 4.20 Preview 5 CL# 4173640, and 4.21 ...

Default Values missing from Local Variables in Blueprint Actor Construction Script

UE - Gameplay - Sep 19, 2019

Specific to the Blueprint Construction Script, Local Variables cannot have their value set in the Editor, because the "Default Value" section of the Details tab will never appear. This only affects ...

World Outliner Sorting order ignores underscores for order

Tools - May 14, 2015

When using the an underscore in the front of a name no longer works for sorting in 4.7 and later. In 4.6 and prior if you added an underscore to the front of the name it would sort to the top of the ...

Swarm Coordinator is not distributing Lighting Builds

UE - Foundation - Core - Jul 20, 2015

Swarm Coordinator in 4.8.1/2 is not distributing light builds across accessible agents. If you have and open a Coordinator included in the 4.7.6 build of the Engine, Coordinator is distributing cor ...

Crash when Scrubbing Matinee Slider with Sound Wave using Subtitles

Tools - Jun 11, 2015

A crash occurs when scrubbing the matinee slider with a 'Sound Wave' that has 'Subtitles' enabled. You need to enable 'Subtitles' within the settings of the asset. Tested issue in 4.7.6 and did no ...

mesh emitter rotations broken

UE - Graphics Features - Feb 26, 2015

I ran into this in the GDC VR demo in a 4.6 build and it made life pretty difficult. I expect it still exists in main, I can provide necessary FX files in QA game if needed. ...

The menu and cursor are removed from the Client window when clicking Play in the Server menu in Multiplayer Shootout

Docs - Samples - Jun 29, 2015

The menu and cursor are removed from the Client window when clicking Play in the Server menu in Multiplayer Shootout. Reproduced using the 4.8.1 download of Multiplayer Shootout. Did not occur in 4 ...

VR Editor Taking Input From Wrong Controller in Foliage Painting.

UE - Editor - Workflow Systems - Nov 2, 2016

When in Foliage Painting mode, the left trigger press causes the right controller to paint foliage instead of the left controller. This bug does not affect Landscaping or Mesh Painting. This is a r ...