Enable Slate layout caching Will cause the Stop/Play Buttons to disappear

Tools - Slate - Dec 17, 2018

When using the command Slate.EnableLayoutCaching 1, The Play button is removed from the tool bar after exiting play. ...

Crash frequently when switch the material viewer

Tools - Material Editor - Dec 17, 2018

This happens almost 100% on a MBP/MaxOS, (2.3GHz Quad-Core Processor ,8GB 2133MHz LPDDR3 memory), also happens in a lower frequency on PC/Windows, (nvidia 1080, 64 memory)  ...

Cameras rotate incorrectly in Sequencer when using Key All and Auto-Key options

Sequencer - Dec 14, 2018

Sequencer is having issues handling a camera rotation going past -180 or 180 degrees with multiple keyframes when Key All and Auto-Key options are enabled. This results in unwanted 180 degree flip w ...

Animation Rate Scale does not appear to have an affect when blending an animation with two different Rate Scales

Anim - Animation - Dec 14, 2018

Rate Scale does not appear to have an effect when using a blend space that blends an animation with two separate Rate scales. ...

Unable to open generated.h file in Visual Studio

DevTools - Dec 13, 2018

This is related to UE-62042, and possibly the same issue. It is still not possible to open a generated.h file from within a project solution. I was able to reproduce this in both a binary Engine ins ...

FBX export - BP StaticMesh Scales from Mesh Origin

Tools - Dec 13, 2018

Unexpected behaviour with meshes scaled via BP and exported via .fbx (.obj looks to function as expected) Confirmed in 4.22 Main CL 4648854 ...

Slight menu lag when using Vulkan on Linux

Platform - Linux - Dec 12, 2018

When using the UE4 Editor with Vulkan there is a slight lag when navigating through the menu options. This lag is not present when launching with OpenGL nor is it present on Windows with -vulkan.  ...

Pressing ESC while on a drag operation makes drag visual to be disappeared and OnDragCancelled not to be called.

Tools - UMG - Dec 11, 2018

DragDropOperation is removed when pressing esc button. but this is skipping OnDragCancelled so it can disrupt user's UMG drag operation logic.  ...

Multiple Primitives created when importing a mesh with "One Convex Hull Per UCX" disabled

Tools - Dec 10, 2018

User has encountered an issue with duplicate collision primitives when importing custom collision meshes from Maya ...