When an event is at a point where it adds stuff going to mainmenu or save menu and then continuing will make it add stuff again.
Being blown by female goblin after catching and putting her down doesn't do anything and can happen even with chastity cage.
Kylira doesn't actually take your ass virginity when you let her kiss you it only adds 10ml of cum to ass and a questlog entry while virginity field still says "for now" meaning you can have 2 ass virginity loss entries in the questlog.
Phantasmal shield shows full incantation icon when learning it and allows entering the stance but since it's actually a normal incantation entering full incantation stance leaves you stuck with doing nothing.
Grappling skills don't mention how they try to affect grapple status (ie. choke and hold in wrestling stance have identical descriptions). Similar thing for sex skills there's really no way to judge which sex skills I should use or get if stamina use is the only thing mentioned.