I’m getting a similar or related issue. Same error message:
undefined is not an object (evaluating ‘e(“core/edit-post”).__experimentalGetPreviewDeviceType’)
In my case, when I click on Layouts and select the layout, I get nothing. It’s just a blank where the layout editor should be. Hopefully the same issue and, if so, I look forward to the update.
One note: Everything is still working on another site manage that is still on WP 6.02. The site where I’m getting the error is on 6.2.
Thanks!