This is in DO10. (Not tried 11 yet.)
I had a stack of Lister Layouts that I had arranged as I wanted them in Preferences.
But the order there did not show up when I used the desktop right-click Lister Layout.
There were always a couple of layouts at the bottom, no matter where I put them in Preferences.
Trying to figure out what was happening, I renamed one.
It turns out that if you use the "en dash" of "em dash" (– or —) characters they force the layout to the bottom of the list. Hyphens do not have the same effect.
Is this by design, a feature or a bug?