I have two characters that for some reason when i loot it goes to my last bag first. Normally loot drops into your backpack the default first bag. It’s not a big deal but it drives me nuts. I’ve default reset all my interface and addons(also full delete) and don’t have any addons that do anything with my bags. These same two characters also have separate chat windows general/combat log/voice different from all the rest of my characters. If anyone has any insight i’d greatly appreciate it.
Sounds like you hit the Clean up your Bags icon on the main bag. I haven’t tried it in awhile but I think it works like a toggle. It won’t reset your existing items back to where they were, you’ll have to do that manually, but you can click it again and move all your stuff back. New items should go into the bags properly.
You can also designate each bag to carry a certain thing if you want. That’s an icon at the top left of each bag’s window.