I have no problems with the desktop or the mobile apps. However, publicly shared notes never seem to load in mobile browsers on iOS (Chrome, Safari, Firefox). I just get a loading indicator and the progress indicator stops halfway across the screen. — and yes I know all three browsers are built upon Apple's webkit.
WiFi signal is strong, devices have been power-cycled. iOS Browser Apps (all three mentioned) have had thier cache purged and when that didn't work I deleted and redownload the mobile browsers.
These are just plain text notes w/o no pictures or extensive formatting. Devices tested on, iPhone 6, iPad Pro both running iOS v10.3.2. Oddly, enough the problem can't be replicated on Android devices.