I'm sure you think this is a feature -- when poor developer (me) has opened to many tabs -- RM will silently close some of them.
This is not a feature this unbelievably ugly, dsigusting bug.
Do you really think that browsing project structure to find a file and then scroll through all of it to find needed line of code is fun?
No it isn't.
I am quite comfortable with 50 opened editor tabs even if they will take 10 "tab rows", but please do not automatically close anything I have had opened by hand.
#besides "hidden breakpoints" it is second of most annoying things about RM