This seems to be new to Monterey because I didn't experience it in Catalina or Mojave. I want to take two screenshots on my MacBook Pro 2017, place them side by side with no space between them and then screenshot that combined image. But each screenshot has a grey space/panel on either side of it and I can't find a way to remove it. So when I place my two screenshots side by side there is a double grey space between them plus a grey space on either side of the combined image. Hopefully someone knows a workaround but why does it happen in the first place? It's very annoying!