I can't reproduce that. In the Tools -> Options dialog, under Editing -> General, and double check to make sure "Apply editorconfig and .seeditorconfig.xml settings" and make sure that using the seeditorconfig is enabled. I believe that is off by default.
Ding ding ding! Yes, but... and I guess this is a relatively minor annoyance for me (so far) - For files that are already open in the project I have to close the file/buffer and then re-open the file to get the new tab spacing. Closing the workspace, or exiting SE is not sufficient. Deleting the history file works, but I then I have to re-open all the files again. At least SE remembers the position in each file even when history is deleted, but not if I had multiple views into the file it only remembers one cursor position. Again, a minor issue.
