Four flights this past week on the E90 and the curtain between J & Y not closed. Especially annoying when I was in row 3. Asked the FA on last flight if this was something new, to which she replied, "I like to keep an eye on the back for security purposes". I asked if this was a new policy for the type. ..curtain was quickly closed.
Seems to invite econ pax to the front lav too.
IMO not closing it is a protest to the 2 crew now on the 90.