Chem Menu wont Close

[waffels5000]

This happens to me very frequently, but almost every time I go to use the chem dispenser as a scientist, or any job for that matter, the top of the menu with the X and minimize and restore down tabs get cut off by the top of my screen, making it impossible to close the menu, forcing me to relog. Tell me if i'm just dumb, but it happened to someone else today while I was in the chem lab. It's really annoying because of the Byond ads.