i usually use 1 screen and when necessary i hit 't, f or l' for different views. but when i make it 4 screen again by pressing alt+w, i see all 4 screens are showing weird perspective, no top view, no front view. Is there a way to lock these screens so that they dont change?
this happens when you have another viewport active. this is indicated by a yellow outline. you can lock the viewport to render in render settings by pressing the padlock icon to the right of the view to render dropdown menu.