Material Layers Relink Button Missing

UE - Rendering Architecture - Materials - Mar 26, 2025

The Relink button is missing (as are the Save Sibling and Save Child buttons) on Material Instances that use Material Attributes Layers in 5.5. ...

On a Mac, Cannot Delete Folder Containing Sub Folders from Content Browser

UE - Platform - Apple - Dec 12, 2016

In the Content Browser, deleting folders within folders on a Mac will result in new folders being generated containing the deleted folders when the Editor is reopened. This is similar to the issue ...

Renaming components in blueprints resets default values for all instances

UE - Gameplay - Blueprint - Sep 15, 2015

Renaming a blueprint component and presing ocmpile will reset any altered instances of the blueprint to default values. ...

Mouse position no longer being tracked after pressing and dragging a button on Android

UE - Platform - Mobile - Feb 3, 2017

Mouse position no longer being tracked after pressing and dragging a button on Android. On PC there is no issue When testing with mouse location via print string on PC mouse position will continue ...

Child Actor Component reappears after Undoing Parent Deletion

UE - Gameplay - Blueprint - Feb 5, 2018

After loading a map containing a ParentBP with a ChildActorBP, Deleting and undoing the deletion will "resurrect" the original child, and a new child actor is parented to parent. Possibly Related: ...

Switching a code project created in a source-built Engine to use the binary Engine results in files being deleted from the binary Engine installation

Tools - Nov 18, 2016

If a code project is created in an Engine built from source code, and then it is switched to use a binary Engine installed by the Launcher, building the project in Visual Studio will result in numer ...

Landscape gizmo persists after landscape is deleted

UE - LD & Modeling - Terrain - Landscape - Aug 9, 2016

When deleting the landscape after sculpting the Gizmo remains after the landscape is deleted. ...

File state in perforce cache is incorrect when revert + delete is enabled

UE - Editor - Workflow Systems - Nov 11, 2022

If the option to delete files on revert is enabled, the revert operation causes incorrect file state in the perforce cache It looks like it has some code to handle this when the option to delete is ...

References stored in deleted UProperties stick around in a Blueprint Class

UE - Gameplay - Blueprint - Apr 25, 2017

If a UProperty that stores a reference to an asset is deleted, the reference to that asset lingers in any Blueprints that had a reference stored in that UProperty. This can lead to issues when the r ...

On Released fires when holding down a button when using touch (mouse/finger not moving)

UE - Editor - UI Systems - Sep 26, 2017

On Released fires when holding down a button when using touch with the mouse or finger. This happens in mobile preview as well as on devices. As a note, if he mouse is moved before the release auto ...