It looks like this is the problem I have (testing on iPhone SE 2020).
Where would I put this code to make it work on my page? - Is there a usage example?
I was getting pretty frustrated with modals not working on iPhone, and then found this forum post. I put this into my site’s CSS, and now modals work on the iPhone. That’s great - thank you!
But, a suggestion: I started building my site long after this fix was known, and used a fairly new PWA template, which didn’t have this fix. The entire point of the PWA was to work well on an iPhone, and an important feature of FMBF was broken. Maybe since then you have updated the template, but if not, I’d recommend adding this fix.