Hey, I’m on Ventura 13.3.1 and my Sketch version is 95.3. I can’t preview Sketch files on Mac. Also when I’m saving new local document it shows wrong app icon. It is very strange. It looks like this 
Hey @yeb
Thanks for reaching out.
It works as expected for me on on Ventura 13.3.1 and Sketch version 95.3. I’m note sure what the problem could be, there are a few possibilities that could have caused this. Our Support team is happy to investigate these options with you further.
Do you mind contacting them via productsupport@sketch.com?
Thanks.
Thanks Jonne. I’ll contact them very soon.
FWIW, I had a similar issue on three different computers 
No Quick Look previews and generic Sketch icons for all .sketch files. In addition, Adobe XD was unable to recognize and open Sketch files, even though Adobe officially supports them.
I contacted support and did everything they told me to do, plus a few other tricks I found online. Nothing worked. Eventually I solved the issue by erase and installing macOS. It was probably an app or something I installed on all computers that messed up the system.