We have a known bug on the "Show icon only" feature we're working on and we have a fix. You'll see the fix in the next Canary build. If you haven't toggled the setting or added a new favorite, the fix will revert your favorites back to the original state. Please don’t right click and “Show icon only” while you’re in this state. If you do it for one favorite, you’ll have to do it for all of them. If you don’t change favorites between now and then, everything will go back to normal on the next build.