photoshop palettes won't extend to full monitor height

My MacBook Pro monitor height is 900px. And if I start Photoshop on my laptop, and then plugin my external monitor which has a 1440px height, the palettes will not extend to that height. They max out at 900px. If I restart Photoshop while my 2nd monitor is plugged in, they will extend to 1440px.

Is there a why to fix this without having to restart Photoshop?