Something I still don't understand, similar to this - not sure if it's a bug or feature but I use Desktops heavily, especially while working at home without my extra monitors. For some reason, the order of my Desktops on Mac seem to reshuffle, I can't work out what causes it or when it happens. I often have it ordered something like this: Desktop 1 - Google Doc (Chrome) Desktop 2 - Researching (Chrome) Desktop 3 - Sl…
The answer is found in System Preferences > Mission Control. Uncheck the “Automatically rearrange spaces based on most recent use” box :)
Always thought it was bug, turned that straight off.