GenerateVisibileRayTracingMeshCommands Severely Reduces Foliage Performance Even if no RayTracing is Used

Rendering - Ray Tracing - Sep 18, 2019

GenerateVisibileRayTracingMeshCommands Severely Reduces Foliage Performance Even if no RayTracing is Used. Found in 4.23 CL# 8386587 and 4.24 CL# 8748719 ...

Crash after clicking the Build button on Linux

Platform - Linux - Sep 17, 2019

This crash is a regression from 4.22.3 (CL-7053642). If lighting is built by selecting "Build Lighting Only" the Editor will not crash. This does not reproduce on Windows with -vulkan. This was rep ...

GameplayAbility Blueprint's FGameplayAttribute does not retain value reference upon Compile

Gameplay - Sep 17, 2019

GameplayAttribute-type function arguments in BP-callable functions(I.E a Blueprint event graph) or nodes have their value reset on BP compilation ...

Virtual Texturing UDIM's Packing Incorrect

Rendering - Features Teams - Sep 17, 2019

In Content Browser Preview asset looks correct, but when opening and using texture. Only textures A and B are used instead of A,B, and C. Found in 4.23 CL# 8386587 and 4.24 CL# 8748719 ...

Crashes when copying an array of actors that implement an interface into an array of interface references

Gameplay - Sep 17, 2019

When assigning an array of actors that implement a specific interface to an array of the specific interface the engine crashes. This doesn't happen if the actor array is put through a for each loop ...

Diffing Tool showing false positive when diff'ing identical blueprints using FText input pin

Tools - Localization - Sep 17, 2019

When diffing the two blueprints, the FText values are deemed different when they are the same. A workaround has been found by doing a pure string-compare for FText inside "GraphDiffControl::ArePinsD ...

CharacterMovement component is not accurately reflecting the characters velocity when becoming uncontrolled during movement.

Gameplay - Sep 16, 2019

The boolean "bRunPhysicsWithNoController" has an attached note that reads: " * Normally without a Controller, movement will be aborted and velocity and acceleration are zeroed if the character is w ...

Viewport breaks with Forward Shading, MSAA and Accurate Velocities from Vertex Deformation Enabled

Rendering - Sep 13, 2019

With Forward Shading, MSAA and Accurate Velocities from Vertex Deformation enabled  the viewport breaks. If any of these settings are different, the viewport is fine again. Found in 4.23 CL# 838658 ...

Web Remote Control Plugin missing from plugin window

Docs - Sep 13, 2019

Remote Control Plugin missing from plugin window. If you follow the instructions on this page they don't work due to the missing plugin. Searching "Web Remote Control" also doesn't find the plugin. ...

When searching for the "Timespan / float" the Context Sensitive search returns "Timespan * float"

Gameplay - Sep 13, 2019

When searching for the "Timespan / float" the Context Sensitive search returns "Timespan * float". Found in 4.22.3 CL#7053642 Reproduced in 4.23.0 CL#8386587, 4.24.0 Main CL#8671808 ...