Photoshop: Font size adjustment should be measured from the baseline

If I have a paragraph of text with all 14px size with 22px leading, and I take the first line and adjust only that to 20px, I would like the rest of the lines to not move down. As it currently works, this will move all the rest of the lines down 6px. This screws up my horizontal grids.

Basically, the new bigger size should grow 'up' instead of 'down'.