Premiere Pro 22.6 will not open with workspaces

I had the same issue (Monterey 12.5.1, MacStudio Ultra)

I found that if I create a new project (so I can get all my workspace to show) and then open an older exising project, the old project will open.   As long as you can get your workspace to appear once, it'll work. 

Also, if you save that first 22.6 project and always open that one first - that workaround works too.

Still...  I've gone back to 22.5. 

Clearing caches and reseting preferences does not have any effect. You can open the windows from the window drop down but its basically a mess and the  resulting layout cannot be saved. All workspaces are grey out so cannot be envoked. This is not an error users can work around.  Quite honestly its baffling it got realeased in this form. Reverting to 22.5 complete with the annoying vignette bug. Ho hum another month with a hobbled system, I  guess thats why we keep paying the big bucks. Sooner or later I suggest we all switch to Da Vinci Resolve.

Version 22.6 can only be found in Beta.  The latest Beta Version is 23.0.  It is the same for Media Encoder.

did you try to reset the preferences?

I have a similar problem.  I can't open any previous projects.

Has this version been launched to day (otherwise its still in beta).