[Arc] Does not report little arc windows or tabs

[zcag]

Arc has these "Little Arc" windows that can show a single tab, used for previewing links for example, before opening it on the actual main window. chrome-cli doesn't report these windows (and the tab contained inside) at all.

chrome-cli info shows the active tab on the main window, not the actual focused tab on the little window.
chrome-cli list windows show only the main window
chrome-cli tabs does not show these tabs at all.

Even through Arc's osascript interface they don't show up as a window, so Arc is doing something weird here.
My usecase is listing open arc windows, and identifying which is "Little Arc" and which is a normal window.

Any idea how i can get this working?

edit: noticed that on macos menu under Window I can see the seperate windows: