From the last entry on the mozilla.dev.developer-tools Google Group, I presume this is the right place to make this suggestion. If not, please let me know.
Could an option be added to automatically bring the browser window into focus the moment you click the “Pick an element from the page” button?
I use Developer Tools as an external window (i.e. not docked to the browser window) as I’m regularly changing the window size to test responsive work.
It’s therefore not unusual for the Developer Tools to overlap the main window. If you click the “Pick an element from the page” button in order to click on an item that is hidden under the developer tools, it’s necessary to then click the browser somewhere other than the page content to bring the windows to the front in order to click on the now visible item.