Editor Crash While Using "Snap to Floor" Shortcut on Some Foliage Instance.

UE - World Creation - Worldbuilding Tools - Foliage - Apr 15, 2019

When pressing the End key to have a foliage mesh "snap to floor/surface" the editor will crash. Found in 4.21 CL# 4753647, 4.22 CL# 5660361, and 4.23 CL# 5898046 ...

Camera FOV Above 90 Causes Landscape LODs to Flicker

UE - LD & Modeling - Terrain - Landscape - Apr 17, 2019

Camera FOV Above 90 Causes Landscape LODs to Flicker Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL# 5660361, 4.23 CL# 5934407 ...

Adding an LOD while in PIE or Simulate Cauases the Editor to Crash

UE - Niagara - Apr 29, 2019

If you add an LOD while the editor is simulating or playing, the Editor Crashes. Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL# 5660361, 4.23 CL# 6063286 ...

Selected Objects Turn Pink in Lightmap Density View Mode

UE - Graphics Features - May 17, 2019

Selected Objects Turn Pink in Lightmap Density View Mode. Works as expected in 4.21 CL# 4753647 Found in 4.22 CL# 6063286 and 4.23 CL# 6395561 This is a regression. ...

Niagara Crash After Adding More Than 20 Emitters to a System

UE - Niagara - May 24, 2019

The Editor will crash after adding more than 20 Emitters to a system. Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL# 6574378, 4.23 CL# 6599617 ...

Niagara emitters occassionally don't receive death events

UE - 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) ...

Mismatch widget component collision and geometry

UE - Editor - UI Systems - Jun 6, 2019

There is a mismatch of collision and geometry of WidgetComponent. This doesn't occur in 4.21. It can only be seen in 4.22. [Workaround] Change following code in UWidgetComponent::UpdateBodySetu ...

The Percentage doesn't work with sheared ProgressBar Widget

UE - Editor - UI Systems - Jun 24, 2019

Translating the shear of Progress widget on the -Y causes the percent bar to not move correctly. Tested in 4.22.3 (CL - 7053642), 4.23 (CL - 7173969), 4.24 (CL - 7032890) ...

Material with Custom Expression at Vertex Shader Stage Does Not Compile

UE - Graphics Features - Jul 22, 2019

When Custom expression is connected to custom UV then material wont compile. This is working as expected in 4.22 CL# 7053642 Found in 4.23 CL#7321677 and 4.24 CL# 7321677 This is a regression. ...

Material Billboard Renders Incorrectly In Splitscreen

UE - Graphics Features - Sep 10, 2019

In splitscreen, Material node SphereMask causes Material Billboard to only be visible to first player's viewport. Found in 4.22 CL# 7053642, 4.23 CL# 8386587, 4.24 CL# 8557439 ...