Editor Crashes when enabling Vertex Colors on an imported Skeletal Mesh with Morph Target Animations

UE - Graphics Features - Oct 11, 2018

Licensee wants to be able to import skeletal meshes which have Vertex Colours (their entire game is Vertex Coloured) and Morph Target animation, but they're seeing a crash when toggling Vertex Color ...

"Failed to find object 'Class None'" in project log after creation

UE - Foundation - Core - Nov 17, 2014

Users reported seeing the line "LogUObjectGlobals:Warning: Failed to find object 'Class None.'" in the Output log after creating a project. I was able to confirm in a new blank code project without ...

Execution reroute nodes become wildcard reroute nodes when creating a second reroute node off the same execution pin

UE - Gameplay - Blueprint - Sep 21, 2015

Execution reroute nodes become wildcard reroute nodes when creating a second reroute node off the same execution pin. Note: this does not appear to affect their functionality as execution reroute no ...

Rich text formatting is disabled on Linux

UE - Platform - Linux - Aug 1, 2016

Rich text does not display on Linux. A Warning: Rich text formatting is disabled message appears where rich text would normally be displayed. I do not see this issue on Windows. REGRESSION: Yes Wo ...

AI Move To Location zeros velocity each call, causing the AI Pawn to freeze if told to move again before reaching destination

UE - AI - Sep 12, 2016

AI Move To Location causes AI to lose velocity each time it is called, resulting in a freeze in movement on each call. Regression: Yes Worked: 4.12.5 (CL 3039270) Broken: 4.13.0 (CL 3106830) Funct ...

Editing static functions in Blueprint Function Libraries with hotreload can cause saving issues with blueprints calling them

UE - Gameplay - Blueprint - Sep 26, 2016

When editing a Static function from a Blueprint Function Library, any blueprints that have already had it added are unable to be saved. This can be worked around by removing the node and adding it a ...

Selecting an object while simulating will stop the objects physics

UE - Simulation - Physics - Aug 28, 2016

Selecting an object that is simulating physics while the simulating will cause that object to stop simulating physics. Moving the object with the widget and releasing will cause the physics to begi ...

Peripheral Vision Angles Greater Than 180 Are Being Ignored

UE - AI - May 26, 2016

Values that are larger than 180 for the Pawn Sensing component's Peripheral Vision Angle setting are being ignored. If they are higher than 180, the pawn will act as if it was set to 180. Found in ...

Lengthy Compile Times on Blueprints Containing an Array of Self References When Multiple Instances Exist in the Level

UE - Gameplay - Blueprint - Oct 11, 2016

There are lengthy compile times with a blueprint with 50+ instances in the level that contains an array of self references. On lower-end machines, the compile times are upwards of 10 seconds. Found ...

Attempting to build MinidumpDiagnostics with Visual Studio 2015 Update 2 results in failure

UE - Foundation - Core - Jun 7, 2016

When attempting to build the Minidump Diagnostics project from the UE4 source, it will fail if you're using Visual Studio 2015 Update 2. Please note that this does not occur in the base VS2015 or wi ...