When passing a path to a mod it doesnt pick it up :

For example :

1. -mod=/location/where/some/workshopcontent/is/located (absolute)
2. -mod=../mymodsishere/ (relative but not under arma3 folder)
3. -mod=@somemod (relative but inside arma3 folder)

1 & 2 wont work , 3 will.