The “little circle logo thingy” is a favicon.
They are usually named favicon.ico and located in your root folder, although in this case it seems plesk “hides” the location.
Ideally, you could specify your own favicon and it would take precedence over the plesk one. Or you could find the plesk favicon and replace it with your own. Or maybe just delete it.
From Ken Hada’s blog
I am working on removing the default favicon that litters every site i create on my godaddy vps account.
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After a little search on the web i have found that there is a hidden favicon.ico file located by doing a-
cd /var/www/vhosts/
Then do a ls -ahl
You should see a dir calle .skel there should be a dir in there called 0
I think thats because for it to show in the bookmarks, it needs to be in the root folder, but for it to show in the address bar it can be a path to a deeper folder. In any case. glad you got it worked out.
Thanks for that tip. I don’t like how Plesk includes that by default and it is nice to get rid of that. Or maybe I should change it to be my company logo?