There are multiple weird issues with scrolling in the "Add discussion" overlay.
- After tapping in the "What is on your mind?" field, the dialog header scrolls out of view and can't be scrolled back in. There is no way to tap "Save".
There are two weird tricks that can bring the header back into view:
- Try scrolling down, then up, without letting go
- Tap the time on the top bar (which is a secret global shortcut to scroll to top)
- After typing in some long text, enough that scrolling would be necessary to view it all, you discover that the text input can't actually be scrolled up.
I couldn't find any way to make it scroll. Seemingly it can be navigated by moving the selection (text cursor), but that is very error-prone.