I noticed that when using SO on Opera Mini (which works almost frigtheningly well btw) vote reversal (i.e. un-downvoting an edited post in my case) does not work the way it does on the desktop site.
On desktop, when I click the downvote button (already hightlighted) a second time, it will undo my downvote, so things appear as if I never voted. In Opera Mini, when I tap the downvote button again SO instead tells me that my downvote is now locked until the next edit (that will probably never happen).
This just happened to me the second time and although it is not a real drama, I think it would be nice if I could "spread more love" instead of being a grinch, also on mobile.
Is this a bug in the mobile site, a problem of Opera Mini, or is this designed to be that way?
EDIT: Ok, I'm sorry, my bad. I just didn't quite get the restrictions on vote reversals by now apparently: a quick test on up- and instantly unup-voting a post in Opera Mini just worked the way it should. Apparently the bug is with me. Thanks for the clarification though!