Touchbar: Prev and next buttons doesn't switch to the expected editors

[auchenberg]

When using the Prev and next buttons in the touchbar, the actions doesn't seem to follow any particular order, but seems to jump around. I assume this is because of some internal ordering of open editors, but this doesn't match what I'd expect: If I press next I'd go to the next right editor tab, and back is the next left one.

[bpasero]

@auchenberg the buttons map to the same thing as Go > Previous and Go > Forward, they navigate in editor history (also within editor).