[UMG] [UE4.6] [Mac Os X] Widgets collapse, attributes break in UMG designer

In UMG for UE 4.6 on Mac OS X, I’m creating a menu that will take inputs and adjust some settings of my game. As you can see, I’ve successfully created 2 widgets below.

Note: Widget 2 (“1. Choose Location”) is dynamically populated with content, and is currently working flawlessly regardless of the bug I’m describing below.

As I go about creating another size box nested inside my grid panel, positioned using spacers, everything seems normal when I add a canvas panel like so:

However, when I start adding any additional widgets, my size box breaks; The anchors reset like so:

The most peculiar part about this is that the error is re-creatable in 2 separate ways:

  • by simply adding additional elements
  • by adding elements (letting them break), then adjusting their settings again, then compiling.

For example, I’ve tried adding all my text elements and input widgets before adding any styling or adjustments. I’m able to successfully apply those styles and adjustments in the editor just fine. The instant I hit save or compile, ALL nest elements zero out; colors, font size, positioning, anchors, etc.

Mind you, this is the same exact process I used to create the prior widgets you see there in the designer. I’ve even tried copying and duplicating them, but they still break.