It's only reproducible on message app nightly desktop environment. When developer clicks the mesage with sender not in the contact db, the view will be stuck in thread list view. It should be a regression by Bug 907740, there is no fb contact datastore in nightly. Maybe we can mock fb.getContactByNumber and return contact for some specific sender for desktop environment working, and build a mock mock datastore if necessary.

(In reply to Steve Chung [:steveck] from comment #0) > It's only reproducible on message app nightly desktop environment. When > developer clicks the mesage with sender not in the contact db, the view will > be stuck in thread list view. It should be a regression by Bug 907740, there > is no fb contact datastore in nightly. Maybe we can mock > fb.getContactByNumber and return contact for some specific sender for > desktop environment working, and build a mock mock datastore if necessary. There is an existing datastore mock in shared/mocks