Spell cast effect should disappear after using rest command
If you cast a spell, then use the rest command to wait while the effect is playing, it will still be playing when the rest is over even though 1 or more hours are supposed to have passed. In the original engine the effect disappears.
(RM-3679 from redmine: created on 2016-12-19 by R. D., , closed on 2017-07-29 by Andrei Kortunov)