QoL opportunity: mark complete checkbox is a moving target

I am, on occasion, required to process a large quantity of tasks in a single sitting. I often have to mark 30+ items complete in 1/2 an hour.

One feature I absolutely love is the checkbox to mark the task complete rather than using the dropdown menu and finding the 'complete' option in the menu itself.

However, this is also incredibly frustrating as the checkbox itself "doesn't sit still".

This is what the check box looks like before you mouse over it:

Mousing over the menu causes the titles to appear, dropping the checkbox by about 15 or so pixels, creating a moving target and causing frustration.

I would like it if the checkbox would not move on me. Either include the titles at the outset, or don't. I want to effortlessly swing my mouse to the checkbox and be able to click it without having to re-adjust for an expanding menu.