i'm missing the possibility to select multiple visitor-groups in the preview-mode of a page. You can only select one:
We often have the use-case that a block is only visible for desktop users and this block has also personalizations, so content is different if the user belongs to specific visitor groups. You can't handle these use cases with a single radio button. So i have to change the content and the personalizations everywhere to be able to see the blocks in preview mode.
This is a must have feature in my opinion.
You could create a new or set of new VGs that match when in other visitor groups. It's a work around and you'd have to pre set them up but it would allow if you have specific combination to preview.