DDX and DDY no longer work properly close to the camera in 4.21 on Android in OpenGL ES 3.1

UE - Platform - Mobile - Mar 29, 2019

DDX and DDY no longer work properly close to the camera in 4.21 on Android in OpenGL ES 3.1.  Worked in 4.20, no longer works in 4.21 or 4.22.  Originally reported as Oculus Quest specific, but repr ...

[CrashReport] UE4Editor-D3D12RHI!FD3D12Viewport::PresentChecked(int) [D3D12Viewport.cpp:492]

UE - Rendering Architecture - RHI - Mar 29, 2019

Callstack is garbage past D3D12 calls but logging for visibility. Generated from CrashReporter ...

Importing through Python doesn't allow the user to set the import options.

UE - Editor - Content Pipeline - Import and Export - Mar 29, 2019

The attached script should import the provided Alembic cache but the import options specified in the script are not passed to the importer resulting in improper data. ...

Delay Before Shot Warm Up introduces hitches

UE - Anim - Sequencer - Mar 29, 2019

setting a Delay Before Shot Warm Up can introduce hitches when rendering out a series of frames. ...

Mali offline compiler v6.4 has compiler error in Platform Stats of material editor.

UE - Platform - Mobile - Mar 28, 2019

if the build error is not reproduced, please open another material. Error from 4.21.2 version [Image Removed] Error from 4.22 preview 7 version [Image Removed] This is reproduced in Win10 Enter ...

Can not edit Level Sequence Actor's Override Instance Data from Blueprint

UE - Anim - Sequencer - Mar 28, 2019

Although DefaultInstanceData of Level Sequence can be edited by BP, bOverrideInstanceData can not be edited by BP. Therefore, to reflect the edited result of DefaultInstanceData by BP, it is necessa ...

Material Parameter Collection parameters only return default values when drawn to a Render Target

UE - Graphics Features - Mar 27, 2019

Material Parameter Collection parameters only return default values when drawn to a Render Target This does NOT happen when drawing a material using a non-MPC parameter. To test this:Open Actor_BP ...

Dynamically Created Render Target Does Not Work in Packaged Project

UE - Graphics Features - Mar 27, 2019

Dynamically created render targets do not work as expected when packaged for windows. If it is replaced with a static render target, it works fine. Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 ...

Crash on debugging a minimized Blueprint (access violation in SWatchTreeWidgetItem)

UE - Gameplay - Blueprint Editor - Mar 27, 2019

Debugging a blueprint with a breakpoint while the Blueprint Editor window is minimized causes the editor to crash. Tested in 4.21.2 (CL - 4753647), 4.22 (CL - 5531554), 4.23 (CL - 5586947) ...

HLODs appear to be calculated individually instead of as a group

UE - World Creation - Worldbuilding Tools - HLOD - Mar 26, 2019

The way in which Hierarchical Instance Static Mesh LODs' screen size is calculated appears to have changed. ...