Hi,
I am currently facing a problem with rendering of an menu item that is a menu alias to another menu item from another menu that is pointing to an relative URL on the same machine.

Menu 1
Menu Item 1.1 pointing to relative/url

Menu 2
Menu Item 2.1 alias pointing to Menu Item 1.1

The result should be:
Menu 2 Title
<a href="relative/url">Menu Item 2.1 Title</a>

But I am getting
Menu 2 Title
<a href="index.php?Itemid=MenuItem1.1_id&relative/url=">Menu Item 2.1 Title</a>

When rendering Menu 1 Menu Item 1.1 is correct rendered.

Is this an configuration issue or an bug?
Do you need any other information?
Thank you in advance.