I realize with Gnome, or its extensions, I can do things like hide the title bar. However, I want to hide the title bar and still see the windows management icons like on Mac OS and Windows.
Is this possible?
Firefox version 60 comes with an inbuilt client-side decoration (CSD) option which gets rid of the title bar but keeps the window control buttons (minimise, maximise, close).
If you have Firefox 60, go to "Customise" screen and disable "Title Bar" option at the bottom.
Then you should see something like this:
Try this, it solved my problem. This is how Firefox looks after I installed it:
The close/minimize/maximize buttons are near (on the right of) the power icon (top right of the screen, they only show when you move the cursor there But you can modify that on Tweak Tools >Extensions >No Title Bar after you install it).
I use the GNOME Shell extension Pixel Saver for this.
When a window is maximized, this extension removes its title bar and places the minimize, maximize and close buttons in the top bar.