I've got the latest version of Inkscape. I don't see this issue in the list of known problems with the Tweak tool, so maybe it's something I'm doing. Anyway Tweak works in all other respects EXCEPT the Shrink and Grow functions. They don't actually shrink or grow anything, they just boggle the shape of the path. Has anyone else noticed this?

I was hoping to use it to modify my continent outlines so they'd look more like hand drawn lines. It's not the end of the world, but I was curious if this is a problem I could solve.