This is incredibly frusterating. Something so simple does not work anymore.
I used to be able to do "sublime ." to open up the current directory and had the folder in the side view.
Now the side bar doesnt come up by default. I tried reverting to a "fresh install" but the same thing is there, so this has nothing to do with the data. And if you launch sublime from command line, there is no drag and drop needed.
This is definitely a bug from somewhere.
I did install Pretty Json, and also added sublime as my git commit message editor, but none of this stuff should actually impact the ability to open a directory with sublime and have it in the sidebar.