Unfortunately I can't use Imgur in my country, so I'll have to use my imagination, but I think I know what you mean.
Compact Recipe Pins will grow vertically as it fills up (particularly when using mini-recipes), so it's important for it to be anchored to the top of the screen. If I put it on the left side (gui.left), other mods would tile underneath it, rather than to the side. The game does have a hard-coded height limit for mod GUIs after which it starts to scroll (and it looks very awkward).
If you find that it's getting in the way, Ctrl-Click on the title bar or use the "Banish" keybind to hide it.
Alternatively, some of the other mods which add the buttons (I know Factory Planner is one) will have options to not show those buttons.