I don`t really know how to explain this but here goes.

The split screen has stopped working .
If I click minimise then the screen just closes , site is still open but I have to go to the Google icon in the taskbar to find it.
I cant` drag website addresses to the screen to create a shortcut because there is no where for them to go.
The split screen has worked in the past , and I used it a lot. I`m lost without it.
I am on Windows 10 . Google Chrome. Desktop PC.
Thanks.