Some people have been complaining about interactions between spells and wildshape, but my take is;
if you're using spells as a moon druid in the first place, you're doing something wrong, because it's the no spells - beast mode subclass. Like a barbarian.
If you're gonna use your druid spells &/or be in human form, use one of the other two subclasses.
Yeah, they complain rightly, since you should still be able to get full use out of any concentration spell cast prior to shifting. Plus there are lots of bugs in the interaction with your equipment too, including items often stopping to work after wild shaping until you remove and equip them again.