When hovering over the english text of the ESV, I get a nice popup in the lower left with the information from the reverse interlinear. Very nice!
However, when the interlinear portion is open, I get only the abbreviated form of the morphological information. I've pretty much learned it (and really only need it occasionally as a crutch anyway), but it seems like hovering over those abbreviations should give the full description of what that alphabet soup is saying.
Hovering over NCcSFS here:
should give: 
just like when hovering over the word righteousness in the english text
