Snap Constraint to Bone affects rotation but not position

UE - Simulation - Physics - Jun 1, 2016

The Snap Constraint to Bone button seems to only rotate and change the limits on a constraint instead of also moving the constraint to the bone's location. ...

Circular Throbber does not appear to be affected when setting the tint

UE - Editor - UI Systems - Jan 25, 2016

Circular throbber does not appear to change colors when changing the tint ...

Touches on windows generate 2 mouse events.

UE - Editor - UI Systems - Slate - Mar 22, 2017

The problem is that windows supplies both a touch event and a mouse event for each touch. The engine then handles touches as mouse input so that UI elements can work correctly on touch platforms. ...

4.19 high dpi menu issue.

Tools - Mar 22, 2018

In a 4K environment, enabling windows animations along with high DPI causes some jittering in the menus. ...

Collision Viewmodes do not affect Instanced Meshes properly

UE - Graphics Features - Apr 9, 2018

Collision View modes, such as Player Collision and Visibility Collision, do not work with Instanced Static Meshes. Regression?: No This also occurred in 4.18 ...

Mobile landscape rendering corrupted in 4.19

UE - LD & Modeling - Terrain - Landscape - Apr 23, 2018

Material editor crash in 5.0.2

UE - Rendering Architecture - Materials - Sep 2, 2022

Conflict between sequencer transform track and Parent Constraint from the Animation Mode breaks temporary pivot translation on any actor

UE - Anim - Anim in Engine - Jul 15, 2025

Note: This affects all versions from at least UE 5.3, including mainline latest. The "Animation" Editor Mode allows creating constraints for level actors. One of these, the "Parent" constraint, con ...

Setting multiple identical actors to replicate movement will crash on PIE with multiple players

UE - Networking - Jan 28, 2015

If ten or more of the same actor in a level have the "replicate movement" checkbox set to true, the editor will crash on PIE if the number of players is set to 2 (or with 1/2/3 players if dedicated ...

DataSmith importer is setting incorrect scale on Actors

OLD - Enterprise - Nov 16, 2018

When importing, DataSmith is assigning a scale on the actors, the option to set the import scale is no longer available in 4.21. ie: a 36" item comes in at 96" This was reported and tested in 4.21 ...