Docs breadcrumbs unexpectedly lead back to qtdoc/index.html

When I'm browsing a page like Blend, and I see a breadcrumb back to qtgraphicaleffects, I expect it to take me to the module page. Instead, it dumps me into the main index.

This seems to be a common problem. I can't find a case in which the breadcrumb at that level of the hierarchy will direct you to an actual page.

Filing as a bug, since it appears to be a broken link.