you guys do understand it's event items coming in w/e patch.
Say in 1.22 they release a event - you wont be able to store items in 1.22 but most likely in later 1.22a or 1.23 etc. They just need to check to make sure it wont cause any issue.

Although they should test before the event but it doesn't mean we can't store all the event items, only the upcoming ones for temporary.

Anyways I posted translation on stuff that kind of sucks from JP Rep today, might get some people angry lol.