Editor/Details Panel allows duplicate keys in TMap/TSet UPROPERTY()

UE - Editor - Workflow Systems - Sep 5, 2023

When edited through the Details Panel in the Editor, TMap and TSet properties should not allow duplicate keys. When those keys are USTRUCTs with the “WithIdenticalViaEquality” trait, this should be ...

Adding a widget to the designer tab will cause all animations to pop back to frame zero regardless of the position of the scrub bar

UE - Editor - UI Systems - May 7, 2015

If the user adds another widget to the designer tab any animations that are available will pop back into what ever setting they have at frame zero regardless of the position of the scrub bar. ...

Auto Convex Collision will cause crash when using significantly small meshes

UE - Gameplay - Dec 16, 2015

A hard crash can happen when applying auto convex collision to a complex mesh that is below a certain build scale or screen size. The meshes that cause this have higher poly counts and increasing th ...

A packaged game that contains a plugin with a custom struct and function using that struct will crash on launch.

UE - Foundation - Cpp Tools - Plugin System - Sep 9, 2015

If a project is packaged with a plugin that contains a custom struct and a function that takes that struct as a parameter, the game will crash when the executable is run. [Link Removed] ...

Mouse dragging cursor accelerates significantly on Mac

Tools - Jan 18, 2017

This also occurs in 4.14.3 This does not occur on Windows. Could not get this issue to reproduce while recording the screen with quicktime player, but if you experience it in person it really feel ...

Set tracking origin has a 90 degree offset between Floor and Eye level

UE - Platform - XR - Jun 15, 2017

Set tracking origin has a 90 degree offset between Floor and Eye level. When switching the Setting for the Set Tracking Origin Node from Floor level to Eye level, there appears to be a 90 degree dif ...

Client movement and animation are heavy jittered on listen server

UE - Gameplay - Player Movement - May 10, 2019

The listen server will see jitter in clients character movement and animations. This is hard to notice without the "slomo" command but is extremely obvious using "slomo". Clients will see server and ...

Chaos cloth simulation bounds are incorrectly rotated when using local space simulation

UE - Simulation - Physics - Character - Aug 18, 2020

The bounds are wrongly calculated when the bUseLocalSpaceSimulation property is set in the Chaos Cloth shared config, as it doesn't take into account the character rotation in the removal of the off ...

Setting Key Interpolation for a point on a curve to Auto behaves differently from UE4 and more like User Interpolation

UE - Anim - Runtime - Mar 17, 2022

Setting Key Interpolation for a point on a curve to Auto behaves differently than it did in UE4. The results are more akin to the User Interpolation with flat tangents. ...

Level instance edit mode changes actor transforms

UE - World Creation - Worldbuilding Tools - Level Instances - Jul 18, 2023