Setting Multi with ETC2 and PVRTC will select ES3.0 as minimum instead of 2.0

UE - Platform - Mobile - Dec 15, 2016

Chris found a bug where if you set Multi, ETC2 and PVRTC will select ES3.0 as minimum texture instead of ES 2.0 ...

Niagara Regression - Looping particle with Spawn Burst Instantaneous on time 0.0 flickers for a frame between loops

UE - Niagara - Jul 16, 2025

Note: This worked correctly up to UE 5.4, but repros from UE 5.5 up to mainline latest. If a Niagara Emitter is set up with "Spawn Burst Instantaneous" on time 0.0, and the spawned particle(s) have ...

Scaling blueprint component via gizmo breaks if axis scale reaches 0.0

UE - Gameplay - Blueprint - Oct 4, 2016

Using the transform gizmo to scale a blueprint component will break the functionality if scaled to 0.0 and released. Workaround: If the scale value is directly set to non-zero value, gizmo can be u ...

Get Mouse position returns 0,0 on mouse release when the editor is fullscreen immersive mode

UE - Editor - UI Systems - Sep 1, 2017

Get mouse position returns zero when when playing in editor with the editor full screened and using immersive mode Note: If a constant value other than 0,0 is printed run the test of the other moni ...

A physics actor will still bounce if the Restitution of a Physical Matieral is set to 0

UE - Gameplay - Oct 6, 2016

A physics actor will still bounce if the Restitution of a Physical Matieral is set to 0 User Description: Explanation : I am trying to create a Badminton Game for fun and while I was trying to han ...

Noticeable Audio Pop when Opening a New Level after Spawning and Playing a Sound with Volume Multiplayer at 0.0

UE - Audio - May 18, 2017

A licensee is reporting an audible pop when transitioning between levels with a sound spawned and playing at volume multiplier of 0.0. The original report was a discrepancy between the old audio en ...

All console variables overridden in Movie Render Queue are set to 0 after the render queue runs

UE - Anim - Sequencer - Aug 4, 2020

All console variables overridden in Movie Render Queue are set to 0 after the render queue runs. It's because all cached previous console variables are reset to 0 just before they are written back ...

Duplicated Child Actor Spawned at (0,0,0) when Using Level Instances

UE - World Creation - Worldbuilding Tools - Level Instances - Dec 5, 2024

Small line at the bottom of 3D Widgets when widgets positions are set to x=0,y=0

UE - Editor - UI Systems - Aug 10, 2015

If the user sets a widget to the position x=0,y=0 and then applies this as a widget component, there will be an artifact at the bottom of the widget that is the color of the widget that is in this p ...

FLowLevelMemTracker::GetTagAmountForTracker with CustomProjectTag returns 0 always

UE - Foundation - Core - May 7, 2020

FLowLevelMemTracker::GetTagAmountForTracker with CustomProjectTag returns 0 always. Because of FLLMTracker::FLLMThreadState::GetFrameStatTotals don't amount to about CustomTags. Following code will ...