I am working with Experience Design from the beginning.
After the latest update I can't see any wireframes of the projects, only grey background. In the preview mode is even worse.
I am attaching the screens to show you how it looks like.
Waiting for your help.
Can you send me a link (maybe through PM) to your .xd file (just upload it to the Creative Cloud, Dropbox, Google Drive, or a similar service) so that we can take a look at it? I'm thinking there might be something wrong with the file.