You do realise that you are still running a pre-release version of avast, so it isn't finished, ready for a regular release.
So in regards to your "So what I am asking is will this ever be fixed?" the jury would be out on that until it is the regular release version.
That said, given the number of people using the pre-release version yours is only the second topic relating to a problem with JAVA and again this is only on a few sites and not for all sites using JAVA. So this isn't a simple case of JAVA not working on any JAVA based site.
Edit: Does IE8 work on this site which uses JAVA,
http://secunia.com/, the software inspector check.