The unreachable test is not testing what it needs to test, because it uses an incorrect condition in the load status notification callback, and unfortunately, after that is fixed the test does not pass. While I figure the problem out, I'll post a patch that fixes the test and disables it.
Created attachment 75814 [details] proposed patch
Comment on attachment 75814 [details] proposed patch Xan reviewed the patch in person over my shoulder.
Landed as 73442.