Door flickering when painted only happens on staging on rare occasions

[MaxIsJoe]

It doesn't always happen but only on staging you'll find that painting an airlock with an airlock painter causes the doors to switch between the old and new sprites when an animation happens. ~~This is hard to replicate,~~ but when it happens once, it happens consistently on all doors.

EDIT : This apparently is more common on staging than on another server you are hosting and much more easier to replicate there.