Slight menu lag when using Vulkan on Linux

UE - 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.  ...

Sphere Reflection Captures Are Not Cleared Out of Arrays Properly When Deleted

UE - Graphics Features - Dec 11, 2018

SphereReflectionCaptures are not properly destroyed when deleted, and still take up space in the AllocatedReflectionCaptureState array. After reaching 341 SphereReflectionCaptures, the only way to c ...

Light is still being generated after the sun is "set" during Geographically Accurate Sun Positioning

UE - Content - Engine - Dec 11, 2018

While ad-hoc testing Geographically Accurate Sun Positioning, I found that I could cause the Sun to set and consequentially render from under the map. Light is still being generated even though the ...

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 ...

Editor Unable to Find Mali Offline Compiler On Mac

UE - Platform - Mobile - Dec 7, 2018

Material Editor is unable to find the Mali Offline Compiler on Mac. This inhibits you from looking at platform stats for Android. Working as expected in 4.20 CL# 4369336 Found in 4.21 CL# 4613538, ...

Crash Upon Sequencer Modification of Actor's Array Variable

UE - Anim - Sequencer - Dec 7, 2018

If Sequencer event track modifies an Actor's Integer Variable Array that is exposed to Cinematics, the Editor will crash when the Stop button is pressed. ...

Enabling Tonemapper via console command causes a black screen when Mobile HDR and Bloom are enabled on Android

UE - Platform - Mobile - Dec 7, 2018

Enabling Tonemapper on Android with Mobile HDR and Bloom enabled causes the entire screen to go black, other than HUD and UMG elements. This seems to occur on older phones, as this occurred on a Ne ...

Python cannot spawn object when running in Ueditor-CMD

UE - Editor - Workflow Systems - Dec 7, 2018

It is probably link to the fact the function try to access so GUI object that are not accessible in CMD EditorLevelLibrary.spawn_actor_from_object should work in commandlet ...

Edits to TriggerBox ChildActor are only reflected in Viewport on first edit

UE - Gameplay - Blueprint - Dec 6, 2018

Edits to TriggerBox 'Shape' parameters (in a ChildActor component) only update in Blueprint Viewport once, to view subsequent updates one must re-open Blueprint. Confirmed in 4.22 MAIN - 4631879 ...

User created constraints have a default joint name of "UserConstraint" that cannot be edited

UE - Simulation - Physics - Dec 6, 2018

Constraints created by users are all given the same Joint Name of "UserConstraint" and it cannot be edited. This makes referencing these joints individually impossible. Regression?: No This occurs ...