When I enabled discounts there were site wide design errors. Spacing on my homepage was messed up, content missing, my navigation options were no longer there (they disappeared from the backend). I made no changes except using the discount manager. Very odd. Once I disabled the sales, nothing went back to normal either...

When I am trying to apply the rule to a collection, not all collections are shown. I search the exact name of my collection and it is showing no results. Less than a quarter of my collections are shown when I try to just browse.