Yup, a debug build triggered the same error locally and I was able to experiment and get a fix up. That test is now passing locally. @tnikkel if you get a chance, no rush, to take a look that would be great.
Bug 1991327 Comment 24 Edit History
Note: The actual edited comment in the bug view page will always show the original commenter’s name and original timestamp.
Yup, a debug build triggered the same error locally and I was able to experiment and get a fix up. That test is now passing locally. Essentially I think I still had some references kicking around, so I made some of them weak/scoped. @tnikkel if you get a chance, no rush, to take a look that would be great.