I love the sidebar feature but when set to open on mouseover on the right side it only can be opened via mouseover on the left side. It doesn’t make any sense. Did you follow that? When set to open on right side, mouseover on right doesn’t work.
Separate issue: Can we make side panel open on the right side?
That’s already implemented in Nightly, then even changed the Sidebar button to match what direction you are using, obviously it is on Nightly so it is WIP, so eventually hover on the right side till open on the right side.
They are slowly building stuff like that, especially since vertical tabs are in development as well so they need to make them change to make the experience good enough so people can use vertical tabs without sidebar in the middle.