Cannot activate or deactivate resource packs in-game

I just learned how to activate a resource pack and it's behaviour pack in a specific world; by going into the settings while I was playing said world and manually activating each of them. It was working perfectly up until I tried implementing another sword resource and behaviour pack- not any different than the previous sword resource pack I'd put in. Now I can't deactivate them or even select them while I'm in world, not even on any other experimental worlds I have! Even if it manages to select, the only thing I get is the green checkmark in the bar where the "activate"/"deactivate" buttons should be. I've restarted the app, restarted my whole iPad, and I'm definitely up to date with the current iOS and Minecraft versions. I have no idea what bugged out.