Bebe, I had problems last year (or the year before?) with Safari (Mac default browser) when writing/editing stories on Medium. I switched to Chrome for Mac, and the problems vanished. Until this week. For some reason the Medium editor under Chrome would not let me designate a line as a subtitle; switched to Safari, no sweat. ¯\_(ツ)_/¯

Regarding comments, a recurring problem for me is the native iPadOS app. If someone claps or leaves a comment for me on one of my comments, the app will immediately shift to the target comment while I am still viewing or typing. Not fatal (I swipe right back) but annoying.