Compile errors when passing interface array into UFUNCTION

UE - Foundation - Core - Oct 9, 2015

Attempting to pass an array of interfaces into a UFUNCTION will fail at compile stating "cannot convert argument 1 from 'TArray<ElementType,FDefaultAllocator>' to 'const TArray<TScriptInterface<IInt ...

Binary-only plugins are not usable without including .build.cs files

UE - Foundation - Cpp Tools - UnrealBuildTool - Jan 22, 2015

We should support not having a source directory at all, unless the plugin needs to be linked against. Related to [Link Removed]. See also: https://forums.unrealengine.com/showthread.php?53710-Prebu ...

Line Trace Does Not Register Hit On Bottom Of Landscape

UE - Simulation - Physics - Dec 15, 2016

When using a line trace under a landscape it no longer registers a hit on the underside. REGRESSION? Yes Worked 4.13.2 CL 3195953 Broken 4.14.1 CL 3224400 ...

Custom Depth Post Process Stencil does not work with Material Billboard on Actors

UE - Graphics Features - Nov 27, 2017

MaterialBillboardComponent does not render with CustomDepth material in PostProcessVolume as other objects do. Found in 4.16.3 CL 3561208, 4.17.2 CL 3658906, 4.18.1 CL 3454814 ...

Android mic stops capturing audio after 2nd load of app

UE - Audio - Aug 1, 2018

The Android app stops capturing audio on the second loading. Tested in 4.19.2 (CL - 4033788), 4.20.1 (CL - 4239966), 4.21 (CL - 4243265) ...

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 ...

Structures don't save map elements that point to an asset reference

UE - Gameplay - Mar 15, 2019

Adding map elements to a structure does not retain the information after saving and closing the project. This only appears to happen after you add a considerable number of Map containers inside a st ...

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 ...

Nodes of inherited function don't refresh automatically in the opened BP editor if implemented interface is altered

UE - Gameplay - Blueprint Editor - Jul 14, 2020

Nodes of inherited function don't refresh automatically in the opened BP editor if implemented interface is changed.Workaround: refresh nodes manually Regression: NO Can be reproduced on the 4.25.1 ...

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 ...