Question: Frame-bufs operation with pop-up frames.

[mikef656]

From the commentary section of frame-bufs.el
;; It is not
;; compatible with non-nil values of `pop-up-frames'.

I use the icicles library one-on-one which provides a frame oriented user experience, along with a stand alone mini buffer and sets pop-up-frames to t.

What issues are caused by setting non-nil values of pop-up frames?

Thanks
Mike