Long thin spinning objects take too long to stop spinning

UE - Simulation - Core - Jun 5, 2023

See the SpinningObjectStability test map in the Physics Sandbox. [Link Removed] It's not clear if this is a bug or a side effect of some of our solver shortcuts (e.g., omission of the precession te ...

Crash: Changing Material Property Overrides of Material Instance

UE - Graphics Features - Dec 14, 2016

When a material has a static bool parameter AND this is overridden in a material instance, Trying to change Blend Mode or Shading Model under the Material Property Overrides crashes the editor. Thi ...

Cable Actor becoming stiff when bound to two dynamic objects

UE - Simulation - Core - Jun 1, 2023

the cable actor does not dynamically deform when the cable actor's parent mesh moves. Instead, the cable actor becomes rigid between the meshes it's bound between. This bug does not occur in the fo ...

Crash Occurs When Attempting to Pass a Struct Containing an int64 into a Blueprint Function

UE - Gameplay - Blueprint - Feb 17, 2016

Attempting to pass a struct containing a variable of a type that is not compatible with blueprints into a blueprint function causes the editor to crash upon PIE. Found in 4.10.2 binary. Reproduced ...

Packaged size of project is double its size when packaging for Shipping Windows (32 bit)

UE - Foundation - Core - Mar 9, 2015

When you package a project in 4.6.1 for Windows (32 bit) shipping, the file size is around 160 MB. When you package a sample project in 4.7.2, the packaged size will be around 345 MB. [Link Remove ...

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 ...

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 ...

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 ...