Tool tips on the main monitor scale to the DPI of the secondary monitor.

Tools - Aug 2, 2016

If the user has different DPI Scaling set on each monitor, the main monitors tool tips will change size based on the secondary monitor. ...

Preview Asset Becomes Detached from Socket When Renamed

Tools - Dec 28, 2017

4.17: The preview mesh disappears entirely when the name of the preview asset is changed When a preview asset is applied to a socket, and the socket is renamed, the preview asset becomes detached ...

FPS drop (present time increase) when moving the editor windows to secondary screens

UE - Rendering - Architecture - RHI - Apr 29, 2022

The licensee has mentioned that they also see an FPS drop without a second monitor, so this can happen just by separating windows out on the same screen. ...

Nanite Mesh Dither Opacity Mask Not Working in 5.6.0

UE - Graphics Features - Nanite - Jul 30, 2025

In Unreal Engine 5.5.4, the Dither Opacity Mask option in a Masked material works correctly on Nanite meshes. However, in version 5.6.0, the dithering effect no longer applies to Nanite meshes. ...

Capsule component Shape values can be glitched inside of Actor class bp

UE - Gameplay - Components - Oct 29, 2015

Capsule component Shape values can be glitched inside of Actor class bp This effects 4.9.2 and 4.10 Preview 3, however it is working properly in 4.11-2736016 User Description: Alright, so the Cap ...

Generated definition of BlueprintNativeEvent UFUNCTION in an interface does not include const keyword for return type

UE - Foundation - Core - Aug 15, 2018

UHT does not correctly create generated code for BlueprintNativeEvent UFUNCTIONs in an interface that return const values. In the corresponding .gen.cpp file, the generated code does not include the ...

Selecting other components after selecting a Spline Component's control point keeps the transform gizmo and functionality at the Spline Control point

UE - Editor - May 3, 2022

Selecting other components after selecting a Spline Component's control point keeps the transform gizmo and functionality at the Spline Control point Repro Rate: 4/4 Tested this in //UE4/Release-4 ...

Adding/Removing a Material Layer on a Parent Material doesn't propagate to Children correctly

UE - Rendering - Architecture - Materials - Jun 9, 2026

When a Material Layer is added to or removed from a Parent Material the layer changes don’t automatically propagate to Child Materials correctly even if the Parent Material is saved. The Child mate ...

Serialization to archive corrupts data

UE - Foundation - Core - Nov 16, 2015

Values stored inside variables becomes corrupted after creating an FBufferArchive variable (FBufferVar), setting FBufferVar.ArForceByteSwapping = true; and then storing the original value in FBuffer ...

Iterative Cook does not only cook new content from Unreal Frontend

UE - Foundation - Core - Cooker - Jun 14, 2018

Using iterative cooking should only cause new or changed content to be cooked but in the Unreal Frontend, content is cooked every time, despite nothing being added or edited. Logs from two subseque ...