Dual Monitors issue

Hi guys, I did run the scripts from the guide @SGS suggested, this is pretty simple and straightforward but I now think that is not my issue.

xrandr output:

Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 16384 x 16384
DisplayPort-0 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 598mm x 336mm
1920x1080     74.97*+  60.00    50.00    59.94
1680x1050     59.88
1280x1024     60.02
1440x900      59.90
1280x800      59.91
1152x864      75.00
1280x720      60.00    50.00    59.94
1024x768      70.07    60.00
800x600       60.32    56.25
720x576       50.00
720x480       60.00    59.94
640x480       66.67    60.00    59.94
720x400       70.08
DisplayPort-1 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 598mm x 336mm
1920x1080     60.00*   50.00    59.94
1680x1050     59.88
1280x1024     60.02
1440x900      59.90
1280x800      59.91
1152x864      75.00
1280x720      60.00    50.00    59.94
1024x768      70.07    60.00
800x600       60.32    56.25
720x576       50.00
720x480       60.00    59.94
640x480       66.67    60.00    59.94
720x400       70.08
DisplayPort-2 disconnected (normal left inverted right x axis y axis)
HDMI-A-0 disconnected (normal left inverted right x axis y axis)

I am typing

xrandr --output "DisplayPort-0" --auto --output "DisplayPort-1" --right-of "DisplayPort-0"

What my issue is that when the monitors switch off, all the applications and windows I have spread on both screens, go to the one monitor.

For example if I have a browser with 2 pages opened on Monitor 1 and a browser with another 3 pages opened on Monitor 2, they will all go to monitor 1( including apps running, like discord, whatsApp etc.)

I will then re-arrange them as I want and while working it's going well but then once the monitor is off the apps running on 2 screens always merge into 1 and of course this is very irritating.

It could be something simple that I don't understand.

Any suggestions are welcome.

Thank you
Kiril