My biggest issue that the the post editor loads in a way that hides the entire first line of text. I think because the icons for wysinwyg wrap around to another row and cover the input box. It makes it really hard to fix the frequent typo/autocorrect failures of typing on mobile devices.
(just realized I can manually fix that by turning off preview - may I suggest simply disabling preview by default on screens under 800px or whatever is the minimum required to fit the entire post editor + preview ui in without the editor being borked)
Also, the top bar doesn’t fit in my mobile screen so i can’t use the profile link, notifications icon, hamburger menu at all from in a topic. On the main topics list, I can very uselessly see only my “long name” in the top right corner. So basically, notifications are out on mobile screens that aren’t a full 1024+ resolution.
The green post #/post total is off the side of my screen as well unless I use landscape mode, which is a pain since then I can barely read any posts and half my screen on the right above the post counter bar is wasted in whitespace. Then the screen was set to not allow user-scaling, so I can’t even pinch-unzoom the thing myself to fix/see all the stuff that is off-screen.
I can scroll within the topics text, but I can’t scroll the title bar to see the menu, and the post count doesn’t move when you scroll, so all in all it’s very difficult to “use” discourse on a mobile device for anything more than just following a single topic that you’re invested in.