Crash When Using Kill Box/Kill Height With Ribbon Emitter

UE - Niagara - Mar 29, 2017

Ribbon type particles seem to crash the engine if they enter a killbox. This reproduces 8/10 times on the first attempt, you may need to play with the kill box placement (left corner and right corne ...

Black artifacts when navigating viewport

UE - Graphics Features - Apr 18, 2017

When navigating the viewport, placed actors can leave a "black shadow" as the camera viewpoint changes. The artifacting remains until "Game view" or wireframe mode is activated. This only occurs i ...

Alt tabbing into the Blueprint Editor while a Microsoft IME keyboard is active causes the editor to freeze

Tools - May 15, 2017

If you change focus to the Blueprint Editor (Alt+tab) while a Microsoft IME keyboard is active, the editor will freeze for a short time. The duration of the freeze is dependent on the number of blue ...

Thumbstick clicks do not register on Linux

UE - 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 ...

Drag and Drop Import option allows folders with space in name

UE - Editor - Content Pipeline - Import and Export - Jul 7, 2017

By using the drag and drop import feature, users can import files that contain spaces in the name. This causes an error in the editor where files inside it cannot save because of the name. Renaming ...

Unhovered event occurs twice with 3D Widget when button is pressed and held

UE - Editor - UI Systems - Jul 21, 2017

When using a 3D Widget that is a button when you press and hold a button and move off of the widget and let go of the mouse the engine registers a second unhovered event. Engine Version tested 4.1 ...

Editor crash when a Breakpoint is added to a Widget's Tick function

UE - Editor - UI Systems - Aug 18, 2017

Editor crashes when a widget's tick contains a breakpoint at a print string node. Based on 4.16 warning message, this appears to be caused by the text attempting to draw when no draw buffer is avai ...

UBT warning during package when nativized blueprint contains a node from a plugin

UE - Gameplay - Oct 9, 2017

When a Blueprint contains a node that was added by a plugin (ex: GetBatteryLevel node added by Optional Mobile Features Blueprint Library), nativizing the BP in 4.16 completed fine but 4.17 gives a ...

Material reroute node does not work with WorldAlignedTextures_Complex Inputs

UE - Rendering Architecture - Materials - Oct 24, 2017

There is an issue occurring with the Material reroute node as it does not work with WorldAlignedTextures_Complex when plugging into inputs. This issue appears to be similar to [Link Removed]. This i ...

Videos of certain sizes no longer display in media players

Media Framework - Oct 27, 2017

Videos of certain sizes no longer display in the Media Player, this also applies to when the media player is a texture or in a material. This issue appears to be a regression. Versions Tested 4.16. ...