Make the steps taken in the popup persist through losing focus

For some purposes I have to work in another app outside the browser while creating an item in the browser extension popup. It’s frustrating to start that process over again. If there isn’t a concern I’m missing, I’d like to request the feature.

There are already features requests about this (see below).
As a workaround, you can open the popup in a new window using the top left button, or use the desktop app.