1. Acess screen resolution
2. Put an lower resolution
3. Before, put a normal resolution
4. This way solve maximize problem of Nautilus, but Firefox still with the same problem
5. Open Firefox
6. Press Alt+F10(in my case, the window have full maximize)
7. Press Alt+F8(to resizing)
8. Resize to full screen
9. Close Firefox
I solved by wrong way:
1. Acess screen resolution
2. Put an lower resolution
3. Before, put a normal resolution
4. This way solve maximize problem of Nautilus, but Firefox still with the same problem
5. Open Firefox
6. Press Alt+F10(in my case, the window have full maximize)
7. Press Alt+F8(to resizing)
8. Resize to full screen
9. Close Firefox
Here works.
Ah, sorry my poor english.