Warp Stabilizer, after stabilized, cannot change it from Smooth Motion to something else. The drop-

Steps to reproduce:
    1. Warp Stabilizer, after stabilized, cannot change it from Smooth Motion to something else. The drop-down doesn't work to allow this.
Result: ...
Expected: ...
 
System info
    Application: Premiere Pro (Beta) v15.2.0.30
    OS: macOS v11.2.3, RAM: 16.00 GB, CPUs (logical): 8