Thumbstick clicks do not register on Linux

Platform - Linux - Jun 6, 2017

The "Left Thumbstick Button" and "Right Thumbstick Button" events on Linux do not trigger with the thumbstick is clicked. Testing all gamepad input, clicking the thumbstick in appears to call the L ...

Retainer Box's widgets will blend in incorrect space when retainer box uses material shader.

Tools - UMG - May 8, 2017

Displaying the UMG content with a material shader will mean that it is drawn to an sRGB aware surface and thus blended in linear space instead of sRGB space (as widgets expect). In sceenshot-1.png t ...

[CrashReport] Linux crash - FVulkanDynamicRHI::Init()

Platform - Linux - Aug 16, 2017

This is a trending Linux crash in 4.17.0 that has also occurred in 4.16 Callstack from LogLogLinux: Error: appError called: Assertion failed: Assertion failed: [File:/home/---/UnrealEngine/Engine/ ...

Warning message appears to be incorrect when casting to an inherited blueprint with a self reference

Gameplay - Blueprint - Jul 27, 2015

A user was trying to cast to a child blueprint from the parent using a "Reference to self" variable as the target. The warning messaged: "Child" does not inherit from "Parent" (Cast to "Child" wou ...

Mouse control is not obtained when clicking on a game's title bar from another app

Tools - Jan 18, 2017

A licensee has reported that gaining focus of a UE4 game window by clicking the window's title bar results in the game only receiving keyboard input and no mouse input until you also click in the ga ...

Montage Section bars render behind black lines in timeline

Anim - Animation - Apr 17, 2017

REGRESSION: No, this also occurs in 4.15. In the montage editor, the gree montage section bars render behind the black lines of the timeline, making them hard to see. ...

Code Delegate behavior is not consistent based on where the delegate is created

Gameplay - Blueprint - May 22, 2017

When a delegate is created in a component class, adding the component to a blueprint will show the delegate in the Event section of the Details panel when the component is selected. This allows an ...

Collision Profile Name variable gets reset on multiple select

Physics - Jun 20, 2017

When adding a variable of collision profile name type to an actor(as editable), its value gets reset when the instance becomes a part of multiple selection. ...

Motion blur on single frames when character and camera are moving together

Rendering - Jul 5, 2017

Motion blur on single frames when character and camera are moving together. Cannot tell what is causing this. There is no pop in the character animation and the only thing I can imagine is that th ...

[CrashReport] UE4Editor_UnrealEd!SCurveEditor::OnObjectPropertyChanged

Tools - Aug 1, 2017

This is a common crash that has affected more than 170 users since at least 4.15 and occurring into 4.17. Based on one user description and frequent project names, this appears to commonly correla ...