Do not sync taskbar position
Currently, if you use Windows 10 Sync your settings to sync Theme, it syncs taskbar position along with the other theme settings. But taskbar positioning is very dependent on the screen of the device for me.
For example, on my surface book (3:2 aspect ratio), I prefer it on the left. But for my Desktop second monitor (9:16 aspect ratio), I prefer it on the bottom.
I didn't realize the setting was enabled and was startled when whichever computer I signed into had it in the wrong position. Luckily I was able to find and disable it. I don't think it fits in the category of "Theme".