The 1.9 patch notes had this:

• Add ESC to close Ship Designer and Diplomacy screens

I thought this would mean that after I have finished trade dialogue with a race, I could just hit escape a couple times to return to the galaxy map.  This does not work!  

Why not?

Why isn't the escape key consistently implemented throughout all the UI?  I can escape out of technology, out of planetary management even from the designer.  Yet, I go one layer into Diplomacy and the escape key no longer functions.  This game already has a lot of mouse clicking, it would improve the quality of life if we could escape out of every menu.

Thank you.