UMG Drag and Drop stops working in a Packaged or Standalone Game

UE - Editor - UI Systems - Aug 20, 2018

Drag and drop operations just become broken on packaged builds or launching stand-alone, despite working inside the Editor (PIE). This is a regression from 4.19.2 (CL-4033788). This issue was repor ...

Materials with a custom node with a Struct that has a function fails to compile for GLSL (Android) and uses a default material

UE - Graphics Features - Apr 29, 2019

A user has reported that Materials that contain a custom HLSL node that has a Struct with a function declared inside of it results in the material failing to compile for GLSL, causing the Material t ...

Widget component navigation does not work in Standalone

UE - Editor - UI Systems - Jun 14, 2019

When running a standalone build, focus navigation doesn't work on widgets within a world-space widget component. This may be fallout from [Link Removed], which parented the widget component's virtua ...

add_possessable doesn't work for all objects

UE - Anim - Sequencer - Jun 17, 2019

Using following code in Python: seq.add_possessable(seq.add_spawnable_from_class(unreal.CineCameraActor).get_object_template().camera_component) doesn't create a camera component track in sequen ...

In-Editor Tutorials are unresponsive when selecting them

Docs - Sep 29, 2021

@triage need approval to submit this into 4.27.2 When trying to select any of the tutorials in the editor, all of them except for the "Welcome to the Unreal Editor" tutorial are unresponsive. They ...

BP multi-level inheritance does not correctly inherit 'Static' mobility

UE - Framework - Blueprint - Sep 8, 2022

User reported an issue of a mesh not being visible when a project has multi-level blueprint inheritance. After reproing, I believe the root cause is DefaultSceneRoot of the grandchild BP class not c ...

Parameters show up in material instances even if they're not supposed to be exposed

UE - Rendering Architecture - Materials - Feb 28, 2018

In this case, I've added inputs to a material function. That material function input uses a parameter as it's default value. [image: Inline image 1] When referenced in the shader[image: Inline ima ...

Cloth painting - Camera movements are broken once leaving the painting tool.

UE - Simulation - Physics - Character - Aug 29, 2023

Possibly a regression, but I could reproduce this issue as far as 5.2, so unsure when it started. The issue seems to be that the cloth painting tool lock the camera movements during painting, but d ...

Ensure condition failed when destroying a Level Sequence Actor on tick

UE - Anim - Sequencer - Oct 18, 2019

In Tick processing of LevelSequencActors of World Tick, If you destroy an actor with an actor's ticks, delete it immediately from the LevelSequencActor array. I think that the problem occurred becau ...

New Material Thumbnails are appearing distorted

UE - Rendering Architecture - Materials - Jun 1, 2016

When creating a new material the thumbnail will start out as the default material sphere but then quickly appear distorted, almost like its zoomed in really close. This does not affect already creat ...