Number of links per row

This is a relatively minor frustration, but when I expand FireFox from my usual window size to full screen, the links get moved to fill the space. With my usual window size, there are four links per row; in full screen, this changes to six links per row. This behavior gets annoying after a while, when I open a new tab and have to search for the link I want in a different place on the screen. Is there be an option to set how many links appear in a row, and to keep this a set number?