Let's say, my mod title is: "My Mod Title"
and my mod folder is: "@MyMod"
When I upload a mod to Steam Workshop (via Publisher v1.2.130231), I use the full mod title in the Name field (in Publisher).
Now it appears that it uses the same name for the destination folder name, so upon downloading, the mod folder becomes "@My Full Mod Title".
But the mod folder should be able to be specified as "@myMod", as normal and originally intended.