Chaos : Rigid body sleeps when very small external force is applied by AddForce

UE - Simulation - Physics - Solver - May 25, 2022

When a small external force is applied to the rigid body, the VSmooth value is reset in the ResetVSmoothFromForces function. Since this function ignores the current velocity, a very small velocity ...

The Get node for the float value of Custom Axis Mappings only return 0.0 when called from Blueprints other than the Controller

UE - Gameplay - Input - Dec 3, 2014

The Get node for the float value of Custom Axis Mappings only returns 0.0 when called from Blueprints other than the Controller. Input from the player does not affect the value. Note: this works a ...

Planar Reflections do not respect SkyLight intensity

UE - Graphics Features - Nov 14, 2017

Planar Reflection actor does not reflect the intensity change of the SkyLight. In attached images, the Intensity of the SkyLight is set to 2. The darker area on the right is affected by the Plana ...

Copy-pasting (in the details panel) an array of structs containing multiline text not coming back entirely correctly

UE - Editor - UI Systems - Slate - Dec 20, 2016

This is the copy buffer (it contains multiline strings): ((SectionName_10_AD815C6B40E1AA91C8FB72B006CB648A="TeamScreen_Overview",TipHeader_8_0A891281438C7AD03199038A729ACC18="Heroes",TipBody_9_C20B ...

Incorrect mesh deformation when Max World Position Offset Displacement used

UE - Graphics Features - Nanite - Feb 12, 2025

When Vertex Animated Texture is used to animate a mesh with World Position Offset, often the Max World Position Offset Displacement Material setting must be increased or the Bounds Scale increased, ...

Collision Responses will reset to previous setting after changing the Preset Collision Profile

OLD - Anim - Mar 1, 2017

Collision Responses will reset to previous setting after changing the Preset Collision Profile. After the change is made and "Accept" is pressed, the Collision Responses will still have the old ch ...

Modules with Emitter Life functioning incorrectly

UE - Graphics Features - Jan 7, 2016

Setting the Emitter Time module with an emitter that is not set to loop will result in an incorrect render of the particles past the emitter duration. Emitter Duration set to 3 seconds:[Image Remov ...

'Moved' event pin doesn't trigger on the 'Input Touch' node correctly

UE - Editor - UI Systems - Apr 8, 2016

'Moved' event pin doesn't trigger on the 'Input Touch' node correctly Regression: This does not happen in 4.10.2. The 'Moved' pin triggers at all times when the mouse-button is held and the mouse i ...

Slider Values are not working inside of a blueprint

UE - Gameplay - Blueprint - May 7, 2015

Slider Values are not working inside of a blueprint in 4.8 Preview 1. User Description: Problem with the numeric float/int boxes in the editor in Blueprints, if for example open the TPS Template a ...

Assert caused by using FText::FromStringTable to initialize a FText property in the constructor of a UStruct based off FTableRowBase

UE - Foundation - Core - Jan 4, 2019

When using FText::FromStringTable to initialize an FText variable in the constructor of an FStruct that inherits from FTableRowBase, an assert is caused due to recursion. The assert is as follows:As ...