The problem was that:
- Each account now has own new message notification
- But PendingIntens for these all point to the same activity,
only with different long extras (for acount IDs).
- Framework merges these intents, because extras don't count
as a "difference" in this case.
- So when multiple new message notifications are shown, they'll
all share the same intent internally, so they'll all open the
same account.
A quick workaround seems to be to set a unique URI to each intents.
Bug 3509555
Change-Id: Ib02842bb32634cfdf01ae2d684dd04dfede23832
dd6e6b8504