Incorrect tiling when an image is placed in retainer box and clips outside of the canvas panel

UE - Editor - UI Systems - Jun 27, 2016

If an image in placed within a retainer box and is then placed so that it is clipping with the edges of the canvas panel it will tile incorrectly. ...

"Create New Asset" section for selecting an image appears directly under the mouse

UE - Editor - UI Systems - Slate - Sep 12, 2016

The Create New Asset Section for applying an image to a brush is directly under the mouse after clicking on the dropdown. If the user simply clicks (and does not hold down the mouse button) they wil ...

Crash When Substance Material Is Applied to a Mesh In HLOD System

UE - World Creation - Worldbuilding Tools - HLOD - Sep 3, 2018

Crash when Substance material is applied to a mesh included in the HLOD system. Working as expected in 4.19 CL# 4033788. Unable to test issue in 4.21 CL# 4339215 due to plugin dependency. Found in ...

Dataless Mutable: Cloth Simulation Not Working With Skeletal Mesh Parameter Node?

UE - Anim - Mutable - Nov 25, 2025

Testing the new dataless Mutable workflow in Unreal Engine 5.7. When replacing the old Skeletal Mesh node with the new Skeletal Mesh Parameter node, the cloth simulation stops working. ...

EditConditionHides on Member of struct, that is in Array, causes Assertion Failed when clearing Array in Data Table

UE - Editor - Nov 23, 2022

Reproduced 3/3 times. Issue also occurs in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed NOT a Regression. ...

Crash due to memory after opening the World Partition window with large objects

UE - World Creation - Worldbuilding Tools - World Partition - Dec 8, 2022

Regression: Tested in UE5/Release-5.0, this issue does not occur so regression is yes. Reproducing this issue has a mixed reproduction rate. I have gotten the editor to crash when scaling the cube ...

Assertion thrown when selecting the Input Preview arrow within a collapsed node within the Material Graph

UE - Rendering Architecture - Materials - Jun 6, 2022

This is a regression testing in //UE4/Release-5.0 CL#18319896 Assertion thrown when selecting the Input Preview arrow within a collapsed node within the Material Graph. ...

Per-section shadow/collision flags lost when merging actors

OLD - Anim - Mar 24, 2017

Information loss when merging actors such as cast shadow and collision. If one of the actors being merged has a different setting such as not casting shadows. This information will be lost and repla ...

MoviePipeline: Can't inherit from UMoviePipelineSetting in BP due to PURE_VIRTUAL

UE - Anim - Sequencer - Oct 28, 2021

IsValidOnMaster/IsValidOnShot need to be BlueprintNativeEvents with a default C++ implementation and allow derived classes to override the function. This is needed so that you can create custom set ...