Material Opacity Mask Not Working As Expected in PIE but Does in Standalone

Rendering - Feb 5, 2019

Material Mask Opacity is not working in PIE, but works as expected in Standalone.  Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL# 4862710, and 4.23 CL# 4898645 ...

Calling Console Commands in Python doesn't execute

Tools - Python - Feb 5, 2019

The console commands do not execute from Python if optional PlayerController parameter is not filled. Tested in 4.20.3 (CL- 4369336), 4.21.2 (CL - 4753647), 4.22 (CL - 4902349) ...

Scrollbox no longer works after being Collapsed (and made visible again) when using remote session

Tools - UMG - Feb 5, 2019

Scroll box no longer scrolls after the visibility has been set to collapsed and back to visible. This only appears to occur when using Remote session. Additional info on setting up remote session: ...

Crash after removing decal (using set fade out node) during design time and then hitting play

Gameplay - Blueprint - Feb 5, 2019

When calling set fade out on a decal during design time via a custom event that is setup to be called in editor a crash will occur when clicking PIE ...

Data Tables with 'ParticleSysParam' structs cause crash

Rendering - Cascade - Feb 4, 2019

Data Tables with 'Particle Sys Param' structs in them as variables will crash when opened. ...

Right click mirror option for scale is applied to all axes even when uniform scale is unlocked

Tools - Feb 4, 2019

When using the mirror (axis) option in the details panel, the mirroring behaves unexpectedly when the uniform scale is unlocked. ...

Resolution appears incorrect when using Windows Mixed reality Simulator

Virtual Reality - Feb 4, 2019

Resolution appears incorrect when using Windows Mixed reality Simulator. It appears to only take up around 1/4 the available screen space. ...

Weird results in lightmaps after update to 4.21.2

Rendering - Feb 4, 2019

Reported by our licensee Gungho. Reproduced in 4.21.2, win10 ...

Unused Foliage Type Causing Unbuilt Lighting

Tools - Foliage - Feb 1, 2019

Foliage components will be unbuilt even after deleting all of the placed foliage in a level. Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL# 4827620 ...

Navigation Mesh ignores Hierarchical Instanced Static Meshes using "Build Paths" or the "Build" Button

Gameplay - AI - Feb 1, 2019

Hierarchical Instanced Static Meshes are partially ignored after building the navigation mesh. This is causing the navmesh to be generated within all or part the HISM instead of around it.  This ...