Crashes when playing Slomo on NiagaraSystem with Solo and DesiredAge.

UE - Niagara - Mar 23, 2023

When Slomo 2 is used to speed up the process, TicksToProcess is greater than 1, which means that ManualTick is called several times during one loop.  When playback is completed by a ManualTick in t ...

Play Dynamic Force Feedback does not work on Android

UE - Platform - Mobile - Sep 16, 2021

When trying to trigger vibration through the Play Dynamic Force Feedback node, nothing happens on Android. I tested this on Windows as well with an Xbox Series X controller connected, and the vibrat ...

Linux Native Toolchain depends on libninfo5 which is not bundled

UE - Platform - Linux - Sep 6, 2019

libtinfo.so.5 => /lib/x86_64-linux-gnu/libtinfo.so.5 (0x00007fc27cf4d000) bschaefer@bschaefer-Precision-T7600:bin$ ldd ./clang linux-vdso.so.1 => (0x00007ffceefe3000) libpthread.so.0 => /lib/ ...

Sub Surface Shading Model has Strange Blotch Color Artifacts when Used with a Ambient Cubemap

UE - Graphics Features - Sep 23, 2019

Sub surface shading model has strange blotch color artifacts when used with ambient cubemap. Since the subsurface profile shading model can't be used with ambient cubemap I wanted to use the regular ...

Incorrect physics interaction on rotated meshes using Complex as Simple collision

OLD - Anim - Feb 13, 2017

Incorrect physics interaction on rotated meshes using Complex as Simple collision. *This is a regression Working in 4.13.2-3172292 Not working in 4.14.3-3249277* User Description: When we updat ...

Crash copying a Static Meshes primitive collision member and pasting it on another element

Tools - Jul 24, 2017

Crash copying a Static Meshes primitive collision member and pasting it on another element. The pasted element seems to need at least 2 members for the crash to occur. User description: Editor Cr ...

Variable Value Range doesn't work during Runtime

Tools - Jul 3, 2018

If a variable has been set to a default value and has a declared value range, it will ignore the value range and print the set value.The tooltip text is misleading or out of date as it gives the imp ...

Interchange framework is bypassed on the second attempt after a failed import

UE - Editor - Content Pipeline - Import and Export - Jul 14, 2025

Hello! We have encountered a bug with the Interchange pipeline. When an interchange texture import is cancelled due to non-power of 2, and then the same texture is imported again without any change ...

"Always Center Window to Screen" No Longer Functioning in New Editor Window (PIE)

Tools - Dec 11, 2015

Regression: In UE4.10, the border that now occurs around New Editor Window causes window to extend beyond native screen resolution designated in Editor Preferences causing the window to 1) Not be ce ...

Trying to chord two buttons already mapped to actions to fire a third action when both are actuated fails.

UE - Gameplay - Input - Apr 14, 2022

We're aiming to set up LT - action 1, RT - action 2, LT + RT - action 3 here. I don't think this is supported via chording at present. You'd need to handle it manually (probably via adding/removing ...