I’ve never had that issue on any sites and Google Search Console runs fine on them all with no errors.
For starters, have you used the mobile editor of your site and adjusted the website to suit mobile devices as well and not just simply shrunk everything to fit onto a mobile device from the desktop editor version?
Use the mobile editor to make your website all mobile friendly and you shouldn’t get this issue happening.
https://support.wix.com/en/the-mobile-editor/getting-started
You will see why I ask about making mobile items too big for screen or text to small etc here.
https://www.quicksprout.com/google-search-console-guide/
(f) Mobile Usability
This report lists problems that might be keeping your website from delivering a positive web experience on mobile devices.
Google reports on elements that are too close together, content that is wider than the screen, content for which the viewport is not set, and other places where the text is too small to read.
Everything in this report matters. Mobile optimization is a significant ranking factor, and your website needs to be totally up to par.
For SEO purposes, fix all the issues reported, and make sure that your website delivers a great experience on every device.
Wix also do their own Wix Support pages for SEO and Google Search Console issues.
https://support.wix.com/en/seo-get-found-on-google/seo-google-search-console
I use the link for the checker in this website here.
https://blog.hubspot.com/marketing/mobile-viewport-setup
Which takes me to this page to check which will tell me if my sites viewport is fine and set
https://website.grader.com/
To use it, simply enter the full URL of your website and you don’t need to add an email address, just click on get your results after you have added your website.
Click off the lightbox that appears after the checking and you will see your results, simply scroll down the page to see if your site has it’s viewport set up correctly, here it is for a site of mine from Wix.

All I do with my websites through Wix is to make sure that the website is added to my Google Search Console and my SEO is all done through Wix and I have used both the desktop and the mobile editor for my website and I never have any viewport issues at all.