Using the cart with a non-E interact key.
I'm a leftie and use U as my interact key. I almost went nuts after picking up a cart for the first time. I couldn't find any way to put the cart back down after moving it. Turns out the interact key being rebound will not let you drop the cart, only pick the cart up. Have to use the default E key to put the cart back down even though i've rebound E to something else. Please fix! :)