I updated Premiere Beta and now all the masks throughout my project have lost their feathering, and as well, can no longer support feathering up past 100. (Previously I had feathering as high as 1000 or more to create gradients across the screen).
Because I had saved since this happening, now even when I open the project in prior versions, this feathering is still preserved at 0 across 100+ masks in my timeline, which will be very time consuming to muanually redo.
Hoping this is just a bug between versions and is resolved in the next update!