AI MoveTo Blueprint node will zero velocity on Pawn when called, causing a freeze if the Pawn is already moving

UE - AI - Oct 4, 2016

AI MoveTo Blueprint node will zero velocity, causing a stop when a new destination is set if the Pawn is currently moving. Regression: Yes Worked: 4.12.5 (CL 3039270) Broken: 4.13.1 (CL 3142249) F ...

Stationary Lights are causing shadowing errors with Movable Objects

UE - Graphics Features - Feb 11, 2015

Stationary Lights are generating shadows with flickering black square and vanish shadows altogether on movable objects in the Preview of 4.7p6 and in the newest Release Branch of 4.7 (2439472). The ...

City Sample - Parked Cars, Traffic, and Crowds do not spawn while in PIE

UE - AI - Mass - May 1, 2023

Repro Rate 10/10 Issue is a Regression as it doesn't occur in 5.1 Parked Cars, Traffic, and Crowds spawn in as expected when launching the project in Game Mode or a Packaged Build Going into the ...

Dragging the Translation Widget in Perspective Viewport on Mac in a second monitor does not translate the selected Actor

UE - Platform - Apple - Nov 11, 2014

Dragging the Translation Widget in Perspective Viewport on Mac does not translate the selected Actor, and when dragging is released the cursor is moved to the top left corner of the Viewport. Happen ...

Expanding a folder in the Finder through the editor will crash the editor

UE - Platform - Apple - Mar 16, 2015

Expanding a folder in the Finder through the editor will crash the editor. Reproduced in 4.7.2 binary on 10.9.5 Crash Report: [Link Removed] ...

Specifying a custom UMovementComponent class via SetDefaultSubobjectClass() does not seem to serialize default value edits correctly on the CDO.

UE - Foundation - Core - Oct 28, 2015

Possibly some sort of issue related to SetDefaultSubobjectClass() rather than UMovementComponent specifically. I was able to reproduce in 4.10 release branch and in //UE4/Main with the test project ...

UMG Animations on existing widgets break when loading new level

UE - Editor - UI Systems - Jan 14, 2021

Marking as a regression as this does not occur in 4.25.4 User description: I want to have UMG UI that persists for the lifetime of the game so I create my root widget and add it to the viewport fr ...

Forward Shading: Scene Capture 2D crash when assigning a RGB Capture Source

UE - Graphics Features - Dec 12, 2016

When using Forward Shading for the project, if you assign a source target to a SceneCapture2D and use either BaseColor in RGB or Normal in RGB the editor will crash. Tested with: Broken: 4.14.1 B ...

Certain Materials do not render on Destructible Meshes in Standalone and Packaged projects

UE - Content - Engine - Nov 10, 2017

Certain Materials do not render on Destructible Meshes in Standalone and Packaged projects. I'm unsure of the exact cause but disabling "Used with Skeletal Mesh" in the materials Details panel, then ...

Ensure occurs when turning on Constraints in Advanced Show Flags

UE - Graphics Features - Jan 11, 2017

An ensure occurs when Constraints are toggled on in the show options. Note After the ensure, you can toggle Constraints off and on freely This is a Regression from 4.14.3 ...