Photoshop Beta: Brush/Eraser Resetting to 0% Roundness After Every Stroke

Photoshop Beta: Brush/Eraser Resetting to 0% Roundness After Every Stroke

I need help :( This is so frustrating!!!!!!!!!!!!!!!

What I have tried so far (and failed):

• Reinstalled Photoshop Beta: Completely uninstalled Photoshop Beta and reinstalled it from the Creative Cloud app. 

• Reset Tool / Reset All Tools: Right-clicked the Brush/Eraser icon in the top options bar and selected Reset Tool, as well as trying Reset All Tools.
• Manual Setting Overrides: Manually changed the brush roundness value back to 100% in the brush options panel.
• Disabled Shape Dynamics Control: Opened Brush Settings (F5) -> Shape Dynamics, and verified that the Control dropdown menu under Size Jitter and Angle Jitter is set to Off (not stuck on Pen Pressure or Stylus Wheel).

The Persistent Behavior:
Despite all of these resets, the moment I lift my pen or mouse stroke, the roundness value for both the Brush and the Eraser instantly drops back down to 0% automatically.

HELP!!!