Disabling 'Maintain Horizontal Ground Velocity' -> incorrect velocity reported when colliding in negative directions

Gameplay - Player Movement - Jun 6, 2019

With  'Maintain Horizontal Ground Velocity' disabled in the first person character - velocity is not set to zero when stopped by collision while moving in a negative direction. Confirmed in 4.23 ...

Instances Created From Merge Actor Have Corrupt Lightmaps

Rendering - Jun 6, 2019

Instances Created From Merge Actor Have Corrupt Lightmaps. Working as intended in 4.20 CL# 4369336 and 4.21 CL# 4753647 Found in 4.22 CL# 6574378 and 4.23 CL# 6842436 This is a regression. ...

Niagara emitters occassionally don't receive death events

Rendering - Niagara - Jun 6, 2019

The death events for Niagara emitters on a Niagara System are ignored every few loops. Tested in 4.21.2 (CL - 4753647), 4.22.2 (CL - 6547378), 4.23 (CL - 6859026) ...

Shadows flicker when using spotlight

Rendering - Jun 5, 2019

The shadows on a spotlight flicker whenever the camera is moved.  Tested in 4.20.3 (CL - 4369336), 4.21.2 (CL - 4753647), 4.22.2 (CL - 6547378), 4.23 (CL - 6845209) ...

Can't reference function parameters in interface functions

Gameplay - Blueprint - Jun 5, 2019

"If a blueprint implements an interface function that returns a value, it is not possible to reference function parameters by right clicking and searching for them. In regular functions, if a functi ...

Enabling Omni Directional Stereo Capture Breaks Draw Material to Render Target Functionality

Rendering - Jun 5, 2019

Enabling ODS (omni directional stereo capture) in project breaks Draw Material to Render Target functionality. Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL# 6574378, 4.23 CL# 6836133 ...

Component icon changes when undoing the adding of blueprint components

Gameplay - Components - Jun 5, 2019

When the user adds two blueprint components to an actor blueprint, compiles the component blueprint, and then undoes adding one of them, the icon for the remaining component changes. This doesn't o ...

Force Feedback is weaker on Linux when compared to Windows

Platform - Linux - Jun 4, 2019

Force Feedback Effects vibrate weaker on Linux when compared to Windows in the same test project. This was reported and tested on 4.22.2 (CL-6574378). This was reproduced on 4.21.2 (CL-4753647) and ...

Async Tick error on Particle System

Rendering - Cascade - Jun 4, 2019

Whenever adding a Beam Data module along with Beam Source and Target, the Cascade editor produces an "NO ASYNC TICK" error. Tested in 4.21.2 (CL - 4753647), 4.22.2 (CL - 6547378), 4.23 (CL - 682596 ...

Huge performance hit when recording a demo (demorec)

Networking - Replay - Jun 3, 2019

The current engine version (4.22) seems to suffer a huge performance hit when using the demo recording (demorec) feature. This issue is present in both the editor and the packaged game (developer bu ...