1913600 - When dragging the multiple selected contacts from the Address Book into To/Cc/Bcc field => adds zero size attachments

Status: ASSIGNED

(Thunderbird :: Address Book, defect)

Description

[EarlgreyTea]

Attachment: drag multiple contacts.mp4

Steps to reproduce:

1. Open Message Compose Window.
2. Open Address book.
3. Select multiple contacts and drag & drop them into the To field.

Actual results:

Zero size attachments will be added.
Number of attachments is the number of selected - 1

Expected results:

As in Thunderbird 115, email addresses of the dragged contact are added to the To field.

Regression window:

https://hg.mozilla.org/comm-central/pushloghtml?fromchange=c886f41fd676eca1bcc69a1fdfa1d01396a58ee2&tochange=d6be3f51dd37a62f511e1e7dfdaefa5558eec4ec

Comment 1

[Magnus Melin [:mkmelin]]

(From https://hg.mozilla.org/comm-central/rev/d6be3f51dd37a62f511e1e7dfdaefa5558eec4ec)

Comment 2

[Magnus Melin [:mkmelin]]

I'm not getting this consistently, and seems it's the same with one attachment.
Not sure why it only happens sometimes, seems like mostly when I drag coming in from above(!??).
Code might be around here: https://searchfox.org/comm-central/rev/35be0aeea42f282cf0d90d4ce0af7e6ac4c91d8a/mail/components/compose/content/MsgComposeCommands.js#9998

Comment 3

[Hartmut Welpmann [:welpy-cw]]

Attachment: Bug 1913600 - Adjust drag'n'drop handling of compose window after bug 1851536. r=#thunderbird-reviewers

Since https://phabricator.services.mozilla.com/D193762 has landed, multiple selected contacts with display names that are dragged into the compose window are treated as attachments. This patch excludes dragged items containing the "text/x-moz-address" flavor from being checked for valid attachments and handles them directly.