Effect Presets missing

Steps to reproduce:

1. No Folder for Effect Presets exists
2. Command (right click in Effects window) to create new Folder for Presets exists, but does not work.
3. Command "Save preset ..." (right click in Effect settings) exits, but does noch work

Expected: Effect preset function as in former versions (eg. 25.6.2)
 
System info
    Application: Premiere Pro (Beta) v26.0.0.39
    OS: Windows v10.0.26200, RAM: 127.63 GB GB, CPUs (logical): 20