The file path is cropped on the code viewer header, and there's no easy way to see it entirely. Developers might need this information to be able to open a file easily in their file viewer or IDE.
It's not recommended to display it entirely because it clutters the interface and brings noise to most users.The file name should remain the most important information here.
Possible solutions discussed:
- expand when clicking on ellipsis, as suggested by @G.Ann
- have a quick “copy in clipboard” button next to it
- the button can even appear on hover
- entire file path appears on hover only