I currently have these spaces:
[Desktop 1] [Eight other spaces including three desktops] [Fullscreen browser]
...and started noticing that even when I'm in the Fullscreen Browser space and I open a new window, e.g. using Dock to open a non-running application, or by opening a downloaded file, they all spawn on Desktop 1. This results in one very cluttered desktop full of windows, and three unused desktops. I also can't quickly swipe my way back to the fullscreen browser.
Is there a reason why the windows don't appear on the closest desktop? I'd prefer to be thrown away as short a distance as possible, if possible. Can this be changed somehow?
I know it's not part of the "restore windows from previous session" feature, since it also happens even when I explicitly select "open new window" from Dock, for e.g. Finder or Safari.