Mail 8.2: "All Messages in this Conversation" is broken

Originator:atlauren
Number:rdar://21617373 Date Originated:30-Jun-2015 01:09 PM
Status:Open Resolved:
Product:Mail Product Version:Mail 8.2 (2102)
Classification:Serious Bug Reproducible:Always
 
Summary:
Mail in Yosemite has a serious regression in reading functionality.  The function for View -> Select -> "All Messages in this Conversation" is broken.

This bug affects both IMAP and Exchange accounts.

Steps to Reproduce:
1] Mail connected to an Exchange or IMAP (i.e. iCloud) account.
2] Have several messages in a single conversation thread.
3] Select one message.  It highlights.
4] Observe that other messages in the thread soft-highlight as well.


Expected Results:
1] Select View -> Select submenu.
2] "All Messages in this Conversation" (Shift-Command-K) should be available.
3] Selection highlight should expand to include all messages in the thread.

Actual Results:
"All Messages in this Conversation" is not available. (Greyed out)
Keyboard command (Shift-CMD-K) is also unavailable.

Regression:
Feature works as expected in Mavericks and prior.
Feature is broken in all releases of Yosemite, including 10.10.3 and 10.10.4.

(Previously filed as 19705476, which was erroneously marked as a duplicate of another bug. That bug was closed, but this error remains.)

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