'pin to taskbar' option does not work properly

I could not find a bugtracker for endless, so, Im reporting this here.
To reproduce the problem:
Download filezilla tar.gz from its website.
Unpack it in your home directory. Execute filezilla binary using ‘Documents’.
Filezilla run as expected. If you right click into its icon at the task, it ll give you an option ‘pin to taskbar’.
But, nothing happens when you click. A launcher is not created and the icon is not fixed into the taskbar.

It’s probably because there isn’t a .desktop file associated with your local copy of Filezilla that provides the name, icon, and executable path for launching it. If you create such a file and put it in ~/.local/share/applications/ you should be able to launch it from the desktop and pin it to your taskbar.

That’s not to say there isn’t a bug here, you shouldn’t be given the option of pinning if the pinning won’t actually work, so I’ll pass this on to the developers.

Thats exactly my point :).
If the user must manually create a desktop file for that to work, it did already fail, from my point of view.