Renaming assets keeps the old file

Tools - Feb 2, 2018

There is an issue where renaming assets keep the old files, which can easily occur after renaming files after a lunched project. This issue keeps old versions of files, these files keep in the conte ...

Point lights with source length building static lighting in incorrect direction

UE - Graphics Features - Mar 21, 2018

There is an issue where Point lights with source length building static lighting in the incorrect direction, the axis in which the light to be built seem to conflict with the preview build. This iss ...

Exceptions can no longer be enabled for ProjectEditor targets

UE - Foundation - Cpp Tools - Jul 16, 2018

It is no longer possible to enable C++ exceptions for the ProjectEditor target in code projects that use the binary Engine. Some fixes that were made for 4.19 now correctly show an error message if ...

Loading a map via File->Open Level... when it is already loaded in World Composition view does not reset actors to origin

UE - World Creation - Worldbuilding Tools - World Composition - May 14, 2019

Loading a map via File->Open Level or just by clicking on it to open it, when it is already loaded in World Composition view does not reset actors to origin. The actors instead keep the same positio ...

Crash occurs when renaming an asset that is used by Class Default Object

UE - Core - Systems - Nov 23, 2021

Not a regression. Tested in: //UE4/Release-4.26.2 CL15973114 Binary - Reproduced //UE4/Release-4.27.1 CL17735300 Binary - Reproduced //UE5/Release-5.0-EarlyAccess CL16682836 Binary - Reproduced Fro ...

Scroll box hand icon is small when DPI scaling is enabled

UE - Editor - UI Systems - Slate - Nov 22, 2022

The scroll box widget currently hides the cursor and manually draws a closed hand software cursor in SScrollBox::OnPaint when right clicking and dragging. This software cursor does not account for D ...

Reimporting of skeletal mesh results in a scrambled skeletal mesh

UE - Editor - Content Pipeline - Import and Export - Oct 17, 2025

When we reimport our skeletal meshes with updated FBXs, the resulting skeletal mesh is scrambled up. See Scrambled.jpg attached. This does not affect every single reimport but happens randomly. W ...

Too large project icon image causes engine to crash

Tools - Apr 27, 2015

The engine will crash if you upload a project icon that's way too large for the 192x192 area. It'll also crash when you open that project back up and try to access the project settings ...

Some landscape grass instances floating when generated on AMD cards under OpenGL

UE - Graphics Features - May 15, 2015

User is reporting grass at the edge of their landscape being generated floating in the air on a Mac Pro with AMD GPUs. I have been unable to repro this on my Mac Mini with Intel Graphics HD 4000. Q ...

Compile button disappears and Hot Reload stops working after failing to Hot Reload in some cases

UE - Foundation - Core - Jun 2, 2016

When failing to hot reload in some cases, the compile button in the editor will disappear and Hot Reloads will stop occurring. This tends to happen randomly in other scenarios but the method above i ...