How to stop synchronous scrolling between two opened files
I open 2 files, copying some materials from file A to file B.
As I switch between the files, I noticed that the page number will automatically be synchronized, i.e. if I am on page 3 of file A, when I switch to file B, it will be page 3 too.
This is not helpful and very irritating as I am looking at different page of each file. Ideally the page shown for each file should be the page last viewed.
Question: how to turn off synchronous scrolling?