This very annoying bug made it into the release version and it is as bad as ever. Ending polymorph abilities, wild shape included, results into the character (the one that comes out of the form) losing every passive feature granted by items. You now basically need to build your druid around items that grant Class Actions/Spells or items that grant passive non-feature bonuses such as +1 to saving throws or skill checks. This makes the shapeshifter ring useless too, which is kinda funny. Some items get completely broken like the light armor that grants ST advantage while obscured. If you use wild shape while being under its effect then your beasial form would have permanent advantage on all saving throws AND after you dismiss your character would have it all the same. Permanent ST advantage. This is a mess that needs a fix, please.