I'm on Ubuntu 17.10 using openbox via xrdp.
I have an existing sublime window open with several files.
If I run subl , it opens a new sublime window, identical to the old one, then opens the file in the new window.
If I run subl -a , the same thing happens.
If I run subl -n , it opens a new window as above, but then opens an additional window with the new file.
Wtf is going on? There seems to be some issue where it can't figure out what happened to its old window.