This is my User.sublime-settings file:
This is my Markdown.sublime-settings file:
Now, whenever I use the "Wrap paragraph at ruler" option, the paragraph is actually wrapped at the 100 line, instead of the 74 line that I use in Markdown. Only after I remove wrap_width does that command actually wrap at the ruler.
So either the name is confusing, the wrap_width always overrides the "wrap at ruler" combined with rulers settings, or this is a bug.