UMG: Drag-drop widgets get stuck at (0, 0)

UE - Editor - UI Systems - UMG - Nov 7, 2022

Reported on the dev forum, drag-drop widget is broken in the 5.1 Preview.https://forums.unrealengine.com/t/unreal-engine-5-1-preview/662523/221 Anyone else having problems with UUserWidget::SetPosi ...

MoveToActor doesn't update AI's path on goal actor's move

UE - AI - Mar 16, 2015

A number of issues with MoveToActor have been observed in 4.7.2, including: 1. Not updating path on goal actor's move 2. hitting obstacles after path updating ...

Combined Translate and Rotate Mode broken when using Local Space

UE - Editor - Workflow Systems - Dec 22, 2023

From UDN: When using the Combined Translate and Rotate Mode we run into an issue where the rotation arrow moves twice as fast as the coordinate frame. The object itself rotates correctly, but if we ...

Vulkan leaks memory when opening and closing windows

UE - Rendering Architecture - RHI - Nov 22, 2019

As described here: https://udn.unrealengine.com/questions/532725/index.html (1) Start Prebuilt Vanilla 4.23.1. with Vulkan enabled (2) Create a new project (3) Drag and drop the Sphere from “modes ...

Using GENERATED_BODY() instead of GENERATED_UINTERFACE_BODY() in an Interface code class results in a UHT crash when trying to build the project.

UE - Foundation - Core - Mar 3, 2015

Replacing GENERATED_UINTERFACE_BODY() with GENERATED_BODY() in 4.7.0 or above results in an Unreal Header Tool crash and build failure in Visual Studio. This was working in 4.6.1, but when tested i ...

Adding SmartObjectZoneAnnotationComponent to a blueprint actor causes a crash when building the package

UE - AI - SmartObject - Jan 30, 2025

If placing an actor with SmartObjectZoneAnnotationComponent added to blueprint actor in a level, it will crash when the level open. As a workaround, adding SmartObjectZoneAnnotationComponent to the ...

[Audio Synesthesia] - Setting a Synesthesia NRT's settings to None crashes editor

UE - Audio - Nov 7, 2022

Setting an Audio Analysers NRT settings to None crashes the editor. Assertion failed: nullptr != LoudnessSettings [File:D:\SMoyls_UE5_Release-5.1\Engine\Plugins\Runtime\AudioSynesthesia\Source\Audio ...

Leaving engine open for an extremely long time builds up memory usage, eventually crashing upon any activity

Tools - May 26, 2015

Edit MattK: Not reproducible yet If the editor is open and used for a long period of time without being closed, it stores memory use. After building up a significant amount of resources building us ...

Crash when trying to export unsupported Paragon Skeletal Mesh asset in 4.23

UE - Editor - Content Pipeline - Import and Export - Sep 11, 2019

When the user tries to export the Skeletal Mesh of TwinBlast (a paragon character that can be purchased off the marketplace) in 4.23. As of the time of logging this bug it is not supported in 4.23, ...

Blueprint Tooltips Appear Behind Contextual Menu

Tools - Nov 30, 2015

On an iMac running OSX 10.11.1 a user reports that the tooltips are appearing behind the contextual menu. *See image ...