I’ve lost a few drafts using the iOS app since the interface update. This happens sometimes when I’m scrolling up and down among previous posts as I type, and accidentally trigger a gesture to swipe the whole forum down, returning me to the forum selection screen. When I open the forum again, no draft.
I’m guessing this is low-probability, high pain. It’s not happening constantly, but when it does, it’s not fun losing a draft. Especially a long one. Especially a long one that I typed out with my thumbs.