I don't know if it's normal but when I unclock auto click, I just keep lmb , hover all the dirt in one go then stop doing anything and the sword clean itself it seems that once a zone is 'selected' for auto click it stays as it
Yes, that's intentional. Without that, the auto clicker felt useless. This would also work really well if I end up trying it on mobile too.
I maybe also add an auto the from chest upgrade, it is clearly the most boring part.
And of course a lot of other upgrade like :