Innerhtml not updating
If you happen to find a fix that only works with jquery update installed I don't mind making that module a dependency of uc_aac either.
Using Jquery Update 5.x-2.0 along with the dev release of this module I am still able to get desired behavior on IE6. I have followed the installation instructions for the module, replacing all the files in the misc folder it specifies.
If you want this to be compatible with most of the important crawlers, you're going to need to actually change the title tag itself, which would involve reloading the page (PHP, or the like).
You're not going to be able to get around that, if you want to change the page title in a way that a crawler can see.
However, attempting to choose another option after that (back to small) did nothing.
I don't think there are any odd characters in my attribute options.
Should be fixed in latest release, I believe the problem was with some of the code in with the Jquery Update module where it tries to alter how events are bound and unbound.