But I am still interested: how did you spot it so quickly?
I happened to be publishing some of my own updates, and was checking the OXP list page to make sure everything had gone through successfully. That's when I saw a line with "null" as the title.
Good to know. Indeed that was the best indication about what has happened. I was studying the logs and there was nothing good about Diso. In fact there was nothing about Diso at all.
I changed the scanner to mention a missing OXZ manifest in the log. But should it get filtered from the output if you can use it so efficiently?