Resavepackages commandlet strips level package thumbnails

UE - Editor - Developer Usability - May 12, 2026

When loading thumbnails in FLinkerLoad::SerializeThumbnails, the level asset has two thumbnails. The first one has a size of 0, which causes the loading process to abort early. Since the actual thum ...

When Constrain Aspect Ratio is enabled, the display position of DrawDebug rendering becomes misaligned

UE - Editor - Developer Usability - Jan 21, 2026

Display DrawDebugSphere at the DefaultPawn's positionSet bConstrainAspectRatio=true on the DefaultPawn's CameraComponent Setting bConstrainAspectRatio=true in CameraComponent causes DrawDebug renderi ...

Call In Editor functions not working in blueprints

UE - Editor - Developer Usability - Dec 19, 2025

Context When selecting a component on an actor, any CallInEditor functions on the component's class appear as buttons in the details panel. Problem The CallInEditor functions don't execute in Blu ...

Camera behavior during "Orbit Pan Mode" (Alt+MMB+Drag) is wrong while piloting an actor

UE - Editor - Developer Usability - Nov 18, 2025

In the Level Editor, dragging the mouse while the "Alt" key is pressed performs one of the "Orbit" movements: OrbitRotation, OrbitPan, OrbitZoom. The same can be done while Piloting an actor. Howev ...

Hovering items at bottom right of Content Browser does not display tooltip and causes cursor flicker

UE - Editor - Developer Usability - Sep 17, 2025

When hovering over items located at the bottom right corner of the Content Browser while the Editor is maximized, the tooltip is not displayed. It seems that the tooltip would extend beyond the edge ...

Editor mode keyboard shortcuts active when in Play In Editor

UE - Editor - Developer Usability - Jun 20, 2025

Editor mode keyboard shortcuts active when in Play In Editor. This behavior is a departure from previous versions. It was described by the licensee as confusing and it clashes with gameplay assigne ...

Toast Notifications Steal Focus Causing Unreal Editor Submenus to Disappear during Navigation on Linux

UE - Editor - Developer Usability - May 8, 2025

Sub-menus disappear when using Linux in a remote session in launcher build of UE Release 5.5.4. ...