Unreal Engine Issues

NotBoolean node is broken in specific projects for State Machine Transitions

In the attached project, you'll find the NewChar_AnimBP. In the state machine, there is a "NotBoolean" node in the JumpingToFallingLoop transition that appears to be broken. At first, the NotBoo ...

Landscape leaking when using ParallelInitView 1

see step ...

Properly handle child actor component referencing Level Instance actor

Switching between input modes via the "Set input mode UI only" node and the "Set input mode Game and UI" node consumes all input for editor

When Changing the between input modes with the "Set input mode UI only" node and the "Set input mode Game and UI" node the editor can become unresponsive. The user can still click on things but it ...

Mouse over events do not trigger if mouse button is held

Widget events for On Mouse Enter, On Mouse Leave, OnHovered, and OnUnhovered don't trigger if the left or right mouse button is held down when the mouse passes over the widget. ...

With Pause Event on frame 0, sequence will never be able to resume playing

With Pause Event on frame 0, sequence will never be able to resume playing. It appears to trigger the event again. ...

LandscapeComponent LodBias doesn't work

RVT does not correctly render multiple identical Instanced Static Mesh Components

If multiple ISM components are set to render to the same RVT and they each have the same mesh/material setup, then intermittently some instances will be dropped from rendering to RVT pages. Differen ...

Using Fracture/Chaos Destruction with TSR as Anti-Aliasing Method generates smeared images.

Using Fracture/Chaos Destruction with TSR as Anti-Aliasing Method generates smeared images whenever the debris are moving. The client pointed out that the issue might come from GeometryCollectionCom ...

Touches on windows generate 2 mouse events.

The problem is that windows supplies both a touch event and a mouse event for each touch. The engine then handles touches as mouse input so that UI elements can work correctly on touch platforms. ...