The reason why F11 works that way is because it belongs to a set of very common shortcuts for the OS that most user in that OS expect to work that way. The same goes for ctrl-x cut and ctrl-v paste.
I don’t consider this a bug and I will merge the two FR you mentioned.
Be able of using the Function keys (F1-F12) to perform -> Functions <-
Sorry, to disappoint but what is promised to be implemented is in roadmap. No ETAs are ever specified.