Steps to reproduce:
- go to P4905
- click on "view raw file"
- select all & copy to clipboard
- paste it into edit window (with ctrl-v)
All the text will appear on a single line, with newline characters displayed as (I think) U+21B5 ↵. They are proper enter newline characters though, can be copy-pasted into other applications.
I have seen similar behavior with tab characters recently (displayed as a right arrow character).
Tested with Chrome 55 / Ubuntu 16.04.