It's great that Ctrl+N works from pretty much everywhere in the AB to create a new contact. Also when editing a new or existing contact, whose changes will unfortunately get lost in the process without asking.

STR

• Edit existing or new contact by changing/filling some data
• Press Ctrl+N while in editing mode with unsaved changes

Actual

• New contact is created without prompting to save changes, so changes are lost for good.

Expected

• Should at least ask to save changes of unsaved contact before discarding them. User has certainly pressed Ctrl+N for a reason, so we could handle that situation gracefully. Should never discard data without asking.
• Disable Ctrl+N when editing new/existing contact, consistent with the New Contact button which is also disabled. Probably no need to allow users to start a new contact without having saved the previous one.

Pushed by solange@thunderbird.net:
https://hg.mozilla.org/comm-central/rev/6306b0479375
Prevent creating new contact if address book is in edit mode. r=mkmelin

Comment on attachment 9333819 [details]
Bug 1833262 - Prevent creating new contact if address book is in edit mode. r=#thunderbird-reviewers

[Triage Comment]
Approved for beta

Thanks for this - it has bit me a few times

Thunderbird 114.0b6:
https://hg.mozilla.org/releases/comm-beta/rev/ba63864676f0

v.fixed in beta