The cider potion seems to last a VERY long time, I think it's actually until you relog. The desc. says 5 mins though. Considering the boost of the thing I doubt this is intended?
Correct, this is a bug that exists in the server at this time. I haven't bother to fix it due to other priorities.
I have been resetting them on auto pilot all this time since they do actually start blinking when they are about to run out lol. I understand it is not a big issue that requires quick fixing as you're talking about 1k mesos each..