This one drives me crazy, like literally, there is nothing worse so far than this.

I have a little video from the several problems and I try to explain them here.

http://xboxclips.com/Edge+Sangral/a80f9ec6-8bd8-43bc-8984-dd33db7abbba

In the video you can see that at some point the game simply doesn't let you change your items in the quick menu anymore, no matter how often you press the button, you also see that I can't put the bottle back, no matter how often I press the Y button, all I can do is throwing it on the ground, only then can I take something else in my hand, but then I get no button prompt to take the item up anymore and if I try that over the menu the Y button once again does nothing.
You could say now that I don't have enough space left but my backpack has enough space, so why is the game not putting it into my backpack? Does the game only tries to put stuff into your clothes? Then why can't I move objects from one pocket to the other? It's frustrating as hell at the moment and I hope you will smooth things out.
At least build on some button text boxes that says the inventory is full of the inventory is the problem, you simply press buttons and nothing is happening and you don't know why. Same with holding A, I don't know what it's supposed to do but it doesn't do anything.