All I can think of are these things..
- Sometimes items don't always change their look when you put something new on. In this case the colour engine has to reset and it only does it when you leave a zone and enter another one.
- Bracers equip and unequip differently than other items. You just click on them in your paperdoll window and they will go into your inventory.
If leaving a zone and entering a new one doesn't make your lost items reappear, try quitting and restarting and then look again in your inventory. Other than that I'd need more specific info on exactly what is happening.
If you have too much stuff in your inventory and you don't want to sell it you can put it in your closet of holding.
Congratulations on completing the quests and defeating Ka! You are the first outside of devs and testers!