.mp4 videos are not playing on certain mobile devices

Media Framework - Nov 14, 2016

When launching a project with a video in it on an Android or iOS device, it either will work or it will not work. I believe this is due to the OS version of the device, but it may be related to the ...

Mac OSX Shader compiling crash When Editor Launched from Symlink

UE - Platform - Apple - Nov 10, 2016

When the editor is launched via Symlink on a Mac, the Material Editor will crash when compiling or when building lighting on a level. This does not occur if the editor is launched from an external d ...

Unable to compile Engine for Debug Editor when bDebugBuildsActuallyUseDebugCRT is set to true

UE - Foundation - Cpp Tools - UnrealBuildTool - Feb 10, 2016

When building the source for the engine in Visual Studio 2015, if bDebugBuildsActuallyUseDebugCRT is set to true and the build configuration is Debug Editor, the build will fail. Full output log fr ...

Ctrl+z while playing in the blueprint editor will undo history

UE - Gameplay - Blueprint - Jun 9, 2015

When pressing play within the blueprint editor, if you use control & z, it'll revert your changes you've made to the blueprint. Which could cause people to lose their progress in their blueprint tem ...

Cine Camera cannot track actors in sub-levels

UE - Anim - Sequencer - May 5, 2016

Cine Camera cannot track actors in sub-levels Could be the actual repro for [Link Removed] ...

Mouse buttons become depressed once Set Keyboard Focus is run on a 3D widget

UE - Editor - UI Systems - May 18, 2015

If a user is holding down a button on the mouse and the Set Keyboard Focus node from blueprint is called on a 3D widget, the button that is being held down on the mouse is reset to the 'Released' po ...

Split Pins on a referenced Macro Library will crash the editor on restart

UE - Gameplay - Blueprint - Mar 3, 2016

Split Pins on a referenced Macro Library will crash the editor on restart 2 callstacks include, one for 4.10.4 and one for 4.11 Preview 6 User Description: I got some macros in my Object Macro Li ...

Camera Rotation Stays locked in Place after Ejecting the Player Controller

Tools - Jul 14, 2015

Camera Rotation Stays locked in place after Ejecting the Player Controller so that even when PIE is stopped the camera position stays locked in it's rotated position rather than returning back to no ...

Event ActorBeginOverlap no longer responds once packaged

UE - Foundation - Core - Cooker - Aug 4, 2015

When a project is packaged and has the 'event actoronbegin' within a blueprint, the 'event actoronbegin' no longer responds. It does respond within the Editor though. Packaged Project: [Link Remove ...

Modulate Shadows shadow overlap not blended

UE - Platform - Mobile - Oct 15, 2015

When using modulated shadows turned on for the directional stationary light in your mobile project, the movable objects shadows will not be blended. Image attached to illustrate the inconsistency. ...