Got the same Problem. Neither Skeletons nor flying Ghouls ( didn't even know they should have bows since i summoned them after patch3 the first time) got Bows. So the Skeletons are useless without them. There are more people with this problem on reddit www.reddit.com/r/BaldursGate3/comments/16po9gv/skeleton_summons_have_no_weapons_post_patch/. Hope it's get fixed fast, don't really wanna play Necro/summon without them.