How to recover lost chrom devtools window with unsaved fragment?

I got a devtools window with a long snippet (unsaved) in sources. Somewhere between tabbing and adjusting the window size to test responsiveness, I lost the window I was working in.

The window should still open, because when I try to reopen devtools on this page, I get a warning: "DevTools has unsaved changes that will be lost forever. Do you really want to leave this page?"

Does anyone know how I can regain access to this window without losing the code in the fragment?