Its just an observation that I am stating here, check it out if its a bug or not, but it surely is causing me problems.
Steps to reproduce:
1. Go to settings of any navigation link
2. Since, I want to link it to a section within the page, i entered the unique linking ID in the URL box
3. The URL is automatically preceded by 'http://' now, so what I entered previously stands of no use
Moreover, I cannot even remove 'http://' from there. Please look into it and revert ASAP.