When the application is maximized, the title of window is sometimes shown on the panel bar. This is OK.
And when the window is inactive (switched to another application), the title of first window is blurred (grayed out) as expected. That is also working as expected.
But when the application is focused again, the title of the active window is not shown in the top panel bar.
I am using 2 monitors and there are a lot of applications running at the same time, so switching back and forth applications/windows is a common thing. And unfortunately the missing title bar of the active window is misleading and distracting.
The problem was also present in 15.04. See similar questions; " In ubuntu 15.04 title bar is not showing title " and " How to bring the title bar on maximize of an app? ".
Best Answer
This is some kind of temporary fix I've found. Go to "System settings -> Appearance -> Behavior" and there in "Menus visibility" section check the option "Displayed on mouse hovering". The menus then will load only on mouse hover, and the titles will be shown.