Change mod location?

My ingame mods are now showing up here:
C:\Program Files (x86)\Steam\steamapps\workshop\content

instead of the %appdata% … I just had to reinstall my OS and all the stuff … is this intended change with the latest beta or something I didn’t set correctly in steam or airportCEO

As mentioned in the other topic, there are two locations for mods.

Appdata -> Your own native mods
Steamapps -> Everything you subscribe to on Steam

The Steamapps folder synchronizes when you install Steam on a new computer. While the native folder must be backed up by yourself.