I've been using UBB back when there only was the Classic version. When I moved to Threads, I had a user who has a username with an ampersand in it. His name is Blue&White. This has never been a problem and it works just fine. The problem now is that I'm trying to create a Content Island to pull into another page as an RSS feed and it breaks because the ampersand isn't coded as &.
Is there anyway to fix this or am I pretty much stuck?