Vulkan is crashing on S7 Mali

UE - Platform - Mobile - Mar 10, 2017

Projects packaged for Android using Vulkan are crashing on S7 Mali devices. This is not happening in 4.14. ...

Crash in Packaged Game When Using Gameplay Tags

UE - Gameplay - Mar 27, 2017

A crash is occurring in a packaged game after populating a data table and using it to populate the GameplayTagTableList, as well as having a blueprint that contains a gameplay tag variable. This c ...

material editor: Auto variable name generation bug

UE - Rendering Architecture - Materials - Mar 21, 2017

If you create a parameter collection node in a material and select a parameter from the drop down and then copy and paste that node a _1 will be appended to the end of the parameter collection varia ...

Placing a rect light in between two static meshes causes the surface to be extremely bright

UE - Graphics Features - Jun 7, 2018

Placing a rect light in between two static meshes causes the surface to be extremely bright. This will happen even though the lights settings are default. It will not happen if it is lighting just a ...

When a Sublevel has "Initially Loaded" set to true and "Initially Visible" set to false, the Editor will crash after exiting PIE

UE - Gameplay - Jul 31, 2018

If you have a sub level with "Initially Loaded" set to true and "Initially Visible" set to false it will crash after exiting PIE. This issue was reported and tested in 4.20.1 (CL-4233996). It has ...

Metal SM5 shader code cannot be viewed in the Editor on Mac

UE - Platform - Mobile - Aug 24, 2018

The Metal SM5 shader code cannot be viewed in the Editor for a Material. Prior to 4.20, only HLSL Code could be viewed. In 4.20, a number of additional shader options were added, and they all work w ...

UCanvasPanelSlot::PostEditChangeChainProperty does not call Super function

UE - Editor - UI Systems - Nov 13, 2018

UCanvasPanelSlot::PostEditChangeChainProperty not only does not call its Super function unless the anchor node has been set, but it calls Super:: PostEditChangeProperty instead PostEditChainProperty ...

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.  ...

No additional MipMaps Generated on UI Texture Group

UE - Graphics Features - Mar 19, 2019

In previous versions of the engine (4.21), 10 MipMaps are generated with the above repro steps. Starting from 4.22 and CLs above the editor only produces 1 MipMap with the above texture settings. T ...

Cannot set FVector values in a "Make Struct" node in Blueprint

UE - Gameplay - May 9, 2019

When trying to use any "Make Struct" node that uses vector values, the values typed into FVector fields will reset to 0. This is a regression from 4.21.2 (CL-4753647). This reported and tested in ...