Upload window!!
 

In the transfers tab, there're two windows, downloads and uploads. In the download window you can push those little tab describing everything, push it to change the order of the files being downloaded, BUT
you can't do the same in the upload window, not change the size of the tabs... why is that? or what am i doing wrong?

Read the faq or known bugs on this forum.. This bug came about in Build 88 of the beta.