I have a problem about pop up windows.
we use an internet-based system at work. And the system should work at Pop-up screen othervise it is crashing a lot. But in pop up screen we can not use it full screen. How can i explain.

We use many monitors which had different resolution. so sometimes pop up does not fit screen. some ti mes bigger and wider sometimes smallier. it is all about resolution but we can not use maximize button or we can not maximize from corners.

This is problem for all browser except vivaldi. But opera is the best for me so i want to solve this.