rfactor2 bug

Hi, I don't own the PORSCHE 911 GT3 CUP DLC, but every time I open rFactor2 it downloads and creates a new folder in \steamapps\common\rFactor 2\Installed\Vehicles\Porsche_Cup_GT3_2018 (screenshot 1). Same happens with the Audi_R8LMS_GT3_2018 and Audi_R8LMS_GT3_2019 folders (screenshot 2). How...