Sometimes moving feeds in the list doesn’t work. I can drag them up and down, but after letting them go they jump back to their original positions.
Should have been obvious to me that the feeds in the sidebar are automatically arranged in alphabetical order.
I’ll turn my bug report into a feature request: Allow me to turn off the automatical ordering of feeds in the sidebar.
You have the option of using a “Sort by use” under Preferences, but otherwise, custom ordering is not yet supporting. It’s on the priority list, but it’ll be a bit before I get around to that.