Widget Slider increments in an odd way when it is dragged outside of its bounds when next to another Widget

UE - Editor - UI Systems - Aug 6, 2020

The attached video shows the results of this bug. When two Widgets are next to each other and one of them has sliders, when the sliders are dragged past their bounds they will increment backward so ...

Chaos Cloth: NaNs can be introduced from bad AnimatedPositions/Normals

UE - Simulation - Physics - Character - Aug 17, 2024

We've worked out at least a possible way this can occur from using uninitialized AnimatedNormals values when changing LODs. Ensuring all AnimatedNormals are initialized appears to fix the problem. ...

Landscape components render black

UE - LD & Modeling - Terrain - Landscape - Dec 1, 2016

Workaround:Open the Landscape Material and click SaveReload the level Landscape components render black upon first-time compile. Observed in QA-Landscape - several chunks of the Landscape were bla ...

Delta applied twice when moving parent and grouped child actors

UE - Gameplay - Apr 8, 2016

When some grouped actors are childed to another actor, and both the group and the parent are selected in the world outliner, movement delta is applied twice to the grouped children. Code for a poten ...

MAC: UE4 Editor crashes in gldReadTextureData on Nvidia 330M

UE - Platform - Apple - Dec 15, 2014

A user is reporting semi-regular crashes on his MBP 6,2, with Nvidia 330M GPU. This is a GL 3.3 GPU which we don't routinely test against, he may have the 256 or 512MB model, but this is unclear. T ...

Crash on PIE with varying number of players

UE - Networking - Jan 26, 2015

User crashes on PIE when number of players is set to two in the "Play" drop down menu. No crash if number of players are set to 1,3, or 4. Additionally, setting the "Dedicated server" checkbox to ...

Hierarchical Instanced Static Mesh component instances are not duplicated correctly if the parent is duplicated

UE - Graphics Features - Dec 16, 2016

Duplicating an actor with a Hierarchical Instanced Static Mesh component that has an instance will duplicate the instance as well, but this instance is not rendered. Please note, this was discovere ...

Blueprint compile failure with empty FTimerHandle return value

UE - Gameplay - Blueprint - Jul 13, 2017

Blueprint compile failure when returning a Timer Handle from a function call when the Timer Handle node is not connected. Compile failure message: "ICE: The type of property %s doesn't match a term ...

SceneCaptureComponent2D Component does not allow the use of the Hidden Actor array

Tools - Sep 12, 2017

SceneCaptureComponent2D Component does not allow the use of the Hidden Actor array and the Show only actors array does not take in elements. This issue does not occur in 4.16.3 because the feature w ...

UMG screen size setting needs update for new mobile devices

Tools - Oct 29, 2018

We're missing settings for iPhone XS iPhone XS Max iPhone XR Google Pixel 3 Google Pixel 3 XL Samsung Galaxy Note 9 We also don't have settings for iPad 5th Gen or iPad 6th Gen, however these would ...