I cannot understand why in the bash, the path for (let's say) the Videos folder is
/home/ioannis/Videos and in the Nautilus is
/home/Home/Videos. This is what it looks like:
Any idea what is causing this?
I think Nautilus just changes the actual path to visually show 'Home' instead. The path is not different in Nautilus, it just shows it like that in the GUI.
Press Ctrl+L in nautilus to view the actual path.
Nautilus use the word "Home" to identify your /home/ directory.
When it shows the path in the breadcrumb, the first "home" is the actual /home dir, and the second one ("Home") represents your /home/ directory.
This substitution makes sense is some cases - I think it's easier for the user to identify the home folder by the name "Home", instead of the username. But it can be confusing in situations like this, though.