The problem is coming from some CSS that we're including in the SCLogin module. In the /modules/mod_sclogin/css/mod_sclogin.css file, at line 34, we have:
.clearfix {
clear: both;
}
That's causing the drop you have because your title/logo area is also using the clearfix style, but expecting some different values. I would simply update that line to:
.sclogin .clearfix {
clear: both;
}
We'll look into adding that into the next release, but it won't be in the 'stable' release that's coming out (hopefully) tomorrow. So, if you fix it now, don't forget to fix it again if you upgrade over the next few days with the next release.
I hope that helps, but let us know how it goes. We'd love to have your feedback on that fix or any other suggestions you have for the SCLogin module.
Thanks,
Alex