When you are in the full screen mode and you try to open a new tab (using Ctrl+T), the address bar remains hidden.
And even if you open it, by putting your mouse on it, you cannot submit any URLs into the address bar of the opened tab.
Steps to Reproduce:
1. Switch to the full screen mode (F11)
2. The address bar shouldn't be visible
3. Open a new tab (Ctrl+T)
4. Try to open a web page in the new tab
The address bar contains: "Search Bookmarks and History"; it is editable but you cannot submit a new address.
When opening a new tab the address bar should be shown.
By the way, changing to another tab and back, allows you to enter an address into the opened tab.
Please test with current 3.6.x and let us know if problem is still persistent. If it is feel free to reopen.