SUMMARY Flameshot has a handy feature which lets you pin the selected region to the screen in a borderless window. This is really useful as a way to temporarily hold an image on the screen to be used as a reference or to even compose new images (e.g. side-by-side comparisons, before/after shots, mock-ups, etc.) It would be great if Spectacle had this feature.
*** This bug has been marked as a duplicate of bug 470369 ***