Error when exporting OBJ unattended

UE - Editor - Content Pipeline - Import and Export - Dec 1, 2020

When doing an unattended OBJ export with python. The export will fail and give the atteched callstack. ...

Update Mesh Section incorrectly sets vertex colors for a Procedural Mesh

UE - Graphics Tools - Modeling Tools - Jun 21, 2022

This is a regression tested in //UE4/Release-4.27 CL#18319896 Update Mesh Section incorrectly sets vertex colors for a Procedural Mesh. The closer a colors R, G, or B value is to 1.0 or 0.0 the mor ...

Buffer Visualization for DecalMask is missing

UE - Graphics Features - Feb 29, 2016

The Buffer Visualization for DecalMask is no longer an option. Also, when looking at the Buffer Visualization Overview the DecalMask slot has been removed. See attached image for comparison Worke ...

Editor will crash while instancing nested AIPerception component template subobjects in an AIController-based Blueprint class during compile-on-load.

UE - Gameplay - Blueprint - Mar 23, 2018

User report of an assertion that fires on editor reload during an attempt to reload an AIController-based Blueprint class with a dependency on a child Blueprint class, both created in a previous edi ...

Adding "_API" specifier to FMovieSceneTrackEditor results in linker errors

UE - Anim - Sequencer - Feb 7, 2017

Unable to add API specifier to FMovieSceneTrackEditor, results in compile errors (pasted in the callstack field) ...

Some post processing features in Preview Scene Settings do not update immediately

UE - Gameplay - Jul 28, 2016

In Persona or the Static Mesh Editor, some post processing features do not update immediately when the user changes them. This was seen with Color Grading and Lens Flare settings. It could affect ...

Moveable/Stationary Point Lights do not render in Orthographic View

UE - Graphics Features - Aug 25, 2016

When using an orthographic camera all point lights set to movable or stationary stop rendering while playing in the editor. This is also broken in standalone game. Note I've attached the project f ...

Unable to click on Building blocks in Strategy Game HTML5

UE - Platform - Mobile - Nov 8, 2016

Other button clicks works on the game. I am able to move the camera, click on the mini map, collect gold, and pause the game. For some reason I cannot click on the building blocks. Cannot check on ...

Generating XCode project from .uproject fails

UE - Platform - Apple - Jun 10, 2016

Using the option Services->Generate XCode Project fails to update the XCode solutuion. This prevents source files added to the project from the directory to show up in the editor. Regression: No - ...

Setting Automatically checkout on Asset Modification in the editor does not check out files

Tools - Nov 20, 2015

When the checkbox for Automatically checkout on Asset Modification is set to true in the editor, updating files (blueprints, materials, etc) does not check them out automatically. REGRESSION Worki ...