Can you attach a screenshot that shows your current setup?

• https://en.wikipedia.org/wiki/Screenshot
• https://support.mozilla.org/kb/how-do-i-create-screenshot-my-problem

• use a compressed image type like PNG or JPG to save the screenshot
• make sure you do not exceed the maximum size of 1 MB

You can consider to move the search bar to the "3-bar" menu button drop-down list via Customization mode or via the right-click context menu of the magnifier icon (Move to Menu).

I don't understand what you meant or what "3-bar" is. P.S. I want to reduce the menus\bars as much as possible; so far I was able to reduce it to 2 bars.

In the screenshot you can see that at the right side - there are 3 buttons in the drop-down menu.

cor-el - the add-on is probably "Hide Caption Titlebar".

So are you implying that the problem doesn't exist for whom doesn't have this button\add-on? Specifically - the address-field doesn't resize and some buttons end-up in the "more tools" menu? Does this menu exist without the theme extension?

I've never experienced the location bar resizing like you reported. I keep the search bar in the "3-bar" Firefox menu button drop-down list to have a longer location bar and see more of the URL..

Does it still resize if you toggle Full Screen mode on/off or does that restore the normal layout?

I'm afraid I didn't really understood your explanation of what you do in your FireFox; these kinds of things are hard to express\understand in words.

I solved the problem; explained in the next reply.

Thanks.

I seem to have solved the problem by installing "Classic Theme Restorer"; which allows to combine tabs and address field to 1 bar (screenshot).