Message needed to show you have been timed-out

A message is clearly displayed when I have been timed / logged out when using other websites. It is often difficult to estimate how long I have been away from the screen when taking a break in using Family Tree. But, when I return, I am allowed to carry on making a change or typing a statement without any warning I am no longer logged-in. The first indication I receive of the fact is when I try to save my last piece of work, and the log-in screen appears! The problem can still be there even when you do log back in - if you have pages open in different tabs.
Can nothing be done to address this problem? A: "You are about to be timed out" message would probably be no good, as you would not notice it if away from the screen. I have come to expect I should save long pieces of typed text (to Word, or elsewhere), to avoid the loss of such if I should be timed out before completion, but still think FamilySearch could be providing the warning I find on other websites.