[Bug 583577] Re: "View by Threads with Unread" results in no ability to read some messages

[gf]

OK, thanks for the update, Bryn. I think there is enough information in
this report now that it can be send to the programmers. For their ease,
I will add a summary here. Please feel free to add any corrections.

-----------------------
SUMMARY:
Ubuntu version 18.04
Thunderbird 52.9.1 (from Ubuntu 18.04 repository)
Problem is reproducible by the bug reporter. 
Problem is evident when there are duplicate messages.

Steps to reproduce:
1. Start Thunderbird
2. Set view to "Threads with Unread"
3. Attempt to read through messages (bug most easily triggered with busy mailing lists, for instance the zfs-discuss list)
4. Some message threads cannot be expanded, appears to be related to threads with duplicate messages

Expected behaviour: all expansion “arrowheads” should expand the thread
when clicked.

Actual behaviour: the expansion “arrowheads” for duplicate messages will
not expand the thread when clicked.

Additional notes:

-----------------------
Bug triager is unable to reproduce the bug.
Bug triager searched for dups - none found.

-- 
You received this bug notification because you are a member of Mozilla
Bugs, which is subscribed to thunderbird in Ubuntu.
https://bugs.launchpad.net/bugs/583577

Title:
  "View by Threads with Unread" results in no ability to read some
  messages

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/583577/+subscriptions