User created OSS plugins require modifying Engine now

UE - Online - Aug 24, 2018

This was discovered in live build and posted in UE Forums that based on changes to OSS, users (binary specifically) can no longer create their own OSS plugins as it requires modifying the Engine Sou ...

Atan2() missing from Math Expression node

UE - Gameplay - Blueprint - Feb 11, 2020

Using the math expression Atan2(y,x) inside of a math expression node results in an error.  Tested in:  4.23.1 CL#9631420 ,  4.25 CL#11341939 ...

Crash when locate_bound_objects is called

UE - Anim - Sequencer - May 14, 2024

This has been tested internally using an editor utility widget yielding the same results. That small project is attached. BoundingObjectTest. 1) Open the project 2) Run the Editor Utility Widget ...

Landscape Grass Type will not build with static lighting leaving 'Lighting needs to be rebuilt warning.'

UE - World Creation - Worldbuilding Tools - Foliage - Sep 3, 2015

When using the Landscape Grass Type and using a Static or Stationary light will throw the 'Lighting needs to be rebuilt' warning. ...

Creating a Blueprint out of existing Blueprints removes all assigned Static Meshes from components

UE - Gameplay - Blueprint - Aug 11, 2015

Creating a Blueprint out of existing Blueprints removes all assigned Static Meshes from components. Reproduced in 4.8.3 binary, 4.9 Releases (//depot/UE4-Releases/4.9/Promotable-CL-2650750), and Ma ...

Packaging fails with Event Driven loader enabled and two function libraries reference each other

UE - Foundation - Core - Mar 29, 2017

Packaging fails with Event Driven loader enabled and two function libraries reference each other even though the functions referenced in each library to NOT call each other in such a way as to creat ...

TBigInt allocates twice as much memory as necessary for FString input

UE - Foundation - Core - Jul 9, 2015

TBigInt appears to allocate twice as much memory as necessary for the input. This produces an unexpected output of the input value. ...

r.ScreenPercentage.Editor does not function

UE - Graphics Features - Jun 2, 2016

Setting r.ScreenPercentage.Editor does not affect the upsampling/downsampling of the viewport in the editor. Regression: YES - the console command correctly adjusted the screen precentage in 4.11.2 ...

Pressing "+" element in landscape grass type asset crashes editor

UE - LD & Modeling - Terrain - Landscape - Jul 31, 2015

Creating a landscape grass type and then pressing the + to add an element crashes the editor. Frequency: 2/2 Crashreporter: not currently available ...

KismetFunctionLibrary: Equals and NotEquals (SoftObjectReference) not accessible in BP Editor

UE - Gameplay - Blueprint Editor - Sep 2, 2022

In blueprint graphs, the action list for soft object references of a Object subclass is incorrect. "Equal" spawns an incompatible node, while the expected "Equal (SoftObjectReference)" is missing. " ...