Windows 10 reached EOS (end of support) on October 14, 2025. For more information, see this article.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Write New Message also opens main window

  • 1 reply
  • 0 have this problem
  • Last reply by Ed

dsphipps100
dsphipps100

Around early December 2025, right after a new Thunderbird release (I forget the exact version number), there was a change in Thunderbird’s behavior when I click on “Write new message” on Thunderbird’s jump list for its pinned icon on my Windows Taskbar.

In the past, Thunderbird would simply open the composition window by itself and I could get right to typing the new email.

Now, however, after the early-December release, when I click on the same jumplist shortcut, Thunderbird opens BOTH the composition window AND the main Thunderbird program window along with it.

Is there a setting (maybe in about:config?) where I can revert Thunderbird to only opening the composition window?

Around early December 2025, right after a new Thunderbird release (I forget the exact version number), there was a change in Thunderbird’s behavior when I click on “Write new message” on Thunderbird’s jump list for its pinned icon on my Windows Taskbar. In the past, Thunderbird would simply open the composition window by itself and I could get right to typing the new email. Now, however, after the early-December release, when I click on the same jumplist shortcut, Thunderbird opens BOTH the composition window AND the main Thunderbird program window along with it. Is there a setting (maybe in about:config?) where I can revert Thunderbird to only opening the composition window?

All Replies (1)

Ed
Ed
  • Top 25 Contributor
  • Moderator

How are both windows showing at the same time?

Ask a question

You must log in to your account to reply to posts. Please start a new question, if you do not have an account yet.