Bloated instruction counts in the material editor causing long compiles

UE - Graphics Features - Apr 17, 2019

artists are dealing with greatly increased iteration times due to long shader compiles when working in the material editor. This has regressed over time as we add more features to the point were wor ...

Crash undoing variable change in Animation Blueprint.

OLD - Anim - Aug 1, 2016

Crash occurs when the user changes a variable in the animation blueprint, and then undo's the change. Note that this occurs with any variable being used, but the callstack will be some what differe ...

Failed to build in Github UE4.27.0.

UE - Simulation - Physics - Aug 30, 2021

Failed to build UE4.27.0 with Win64/Development Editor.  Can avoid this error that excluding the project from build configuration. (Solution UE4->Properties->Configuration Properties->Configuratio ...

Widget components and widgets in screen space are not the same color

UE - Editor - UI Systems - Jun 27, 2016

Widget components appear to be affected by lighting. This causes differences in color between widget components and widgets that have been added to the viewport. ...

Editor crashes if a sublevel with a landscape is duplicated then added to the persistent level as a sublevel.

UE - LD & Modeling - Terrain - Landscape - Aug 18, 2016

If a sublevel is duplicated and contains a landscape, the editor will crash when the duplicate level is added to the persistent level as a sublevel. Frequency 4/4 Regression (yes) issue (does not ...

AI Perception Not Showing Up in Debugger

UE - AI - May 20, 2016

AI Perception does not seem to be showing up in the debugger. The same setup functioned as expected in 4.11.2 binary, but upon converting the project to 4.12 Preview 4 binary, no debug information w ...

Atmospheric Fog actor creates a black ring on the horizon

UE - Graphics Features - May 16, 2016

When using the Atmospheric Fog actor, a black ring can be seen on the horizon. This can be seen by simply placing the Atmospheric Fog into an empty level. The issue cannot be seen if there is a sky ...

Precomputed lighting is not saved when using Save As or Duplicate for levels

UE - Graphics Features - Sep 30, 2016

Lighting is invalidated with levels that have been duplicated or Saved As. The maps that are created are immediately marked dirty and need to be resaved vs how they were in 4.12.5 where they wouldn' ...

Shadow Quality regression on mobile for Movable Directional Lights

UE - Platform - Mobile - Oct 11, 2016

Shadow quality from a movable directional light has lower resolution quality than the previous release of the engine. This is a regression in quality from 4.12.5 to 4.13. Tested with: Good Quality ...

Physics Constraint no longer constrains components that are set to Query Only

UE - Gameplay - May 5, 2016

Physics Constraint no longer constrains conponents that are set to Query Only Regression from 4.11.2 User Description: Testing a 4.12 copy of my 4.11 project and when I tested in editor, all my ...