Same here, although it went away for a while, then came back with a vengeance for a couple of days, now seems fine again 
Happens in Edge on Windows, so it’s not to do with iOS.
Ok. I’ve misunderstood how web fonts work then…
I’ve only seen it on my phone (android chrome) but it happened on another website too
So it’s either both sites using the same platform or it’s a chrome (possibly android) issue