favicon not going into the root directory
 

I created a favicon that has a transparent background.

When I put the favicon in the 'images/favicon' folder and then enter the file name into the relevant admin field, the favicon shows up in the browser tabs, bookmarks etc. as it should, but the background is always white.

When I manually copy the favicon into the root directory of my web site (and make no other changes - the admin is set up as described above), now the favicon shows up in the browser tabs with the correct transparent background.

Is this expected behavior? I'm just wondering if I tripped over a bug in how the theme handles favicons. I'm using version atahualpha 3.4.9