Email client Thunderbird 68.3.0 is out

The Thunderbird team has released Thunderbird 68.3.0 recently. The new version of the new major branch of the email client is a security and maintenance release for the most part that fixes several issues discovered in previous versions of the email client.
Thunderbird is offered in two branches currently: the 60.* branch with legacy support for extensions, and the new 68.* branch that focuses on WebExtensions for the most part. Currently, Thunderbird 68.* is only offered as an update on Thunderbird 60.* devices if the calendar add-on Lightning is installed.
Thunderbird 68.3.0
Thunderbird 68.3 fixes several security vulnerabilities. You find detailed information about each on the official security advisories page. The email client is not affected by critical issues; the highest severity rating is high.
Here is a short list of fixed issues:
- CVE-2019-17008: Use-after-free in worker destruction
- CVE-2019-13722: Stack corruption due to incorrect number of arguments in WebRTC code
- CVE-2019-11745: Out of bounds write in NSS when encrypting with a block cipher
- CVE-2019-17009: Updater temporary files accessible to unprivileged processes
- CVE-2019-17010: Use-after-free when performing device or
- CVE-2019-17005: Buffer overflow in plain text serializerientation checks
- CVE-2019-17011: Use-after-free when retrieving a document in antitracking
- CVE-2019-17012: Memory safety bugs fixed in Firefox 71, Firefox ESR 68.3, and Thunderbird 68.3
The official release notes list two additions to Thunderbird 68.3.0. Extension developers may use the newly implemented Message Display Toolbar Action WebExtension API, and navigation buttons are now available in content tabs in the application.
Windows users who use Thunderbird may notice that the new email icon has changed on the system.
The remaining changes address issues in previous versions of the email client. None of the issues appear to be major, e.g. that attachment icons were not always correct in the write pane or that the drag & drop reordering of accounts was not working on the Instant messaging status dialog.
Users who noticed that toolbar buttons of add-ons would not show up in the menubar after start won't experience that issue anymore in the new Thunderbird version.
Now You: which email client do you use?


You said that Outlook isn’t your main email client, so which is your main one?
I think its thunderbird
It is Mozilla Thunderbird.
Awesome! This actually solved my problem… what a stupid bug.
If this is the same bug that I’ve encountered, there may be another fix: (1) hover over open Outlook item in Taskbar, cursor up to hover over Outlook window item, and right-click; (2) this should give you Restore / Move / Size / Minimize / Maximize — choose Move or Size; (3) use your cursor keys, going arbitrarily N/S/E/W, to try to move or size the Outlook window back into view. Basically, the app behaves as though it were open in a 0x0 window, or at a location that’s offscreen, and this will frequently work to resize and/or move the window. Don’t forget to close while resized/moved, so that Outlook remembers the size/position for next time.
THANK YOU Claude!!! I could get the main window to launch but could not get any other message window to show on the desktop. You are my hero!!!!
Solved my issue! 6 years later and this is still problem…
Fantastic. Thank you. Size did the trick.
This solved my Outlook problem, too. Thank you. :)
Thank you so much, this started happening to me today and was causing big problems. You are a life saver, I hope I can help you in some way some day.
You are a god – thank you!
thanks a lot…. work like charm.. :-)
Yah…thanks Claude. I’ve been having the same problem and tried all the suggestions…your solution was the answer. It had resized itself to a 0/0 box. Cheers
Excellent post. This had me baffled even trying to accurately describe the problem. This fixed it for me.
Thank you
Thanks a lot for the article. Don’t know why it happenend, don’t know how it got fixed, but it was really annoying and now it works :-)
Thanks a lot. I was facing this issue from past 3 week. I tried everything but no resolution. The issue was happening intermittently and mainly when I was changing the display of screen ( as i use 2 monitors). The only option i had was to do system restore. But thanks to you.
I’ve been tried to sole this problem for 12hours. Your comment about changing the display of screen helped me a lot!! Thanks!!
Thank you…don’t know why this happened but your instructions helped me fix it. Running Windows 10 and office pro 2007
Great tip! Thanks!
Worked for me, too – thank you!!!
It’s Worked for me, too
thank you very much!
I had a similar issue with Outlook 2013 on Windows 10 and this helped me to fix it. Thank you very much!
Thank you so much. Solved!
Considering you published this in 2012, incredible not been debugged by Microsoft.
Thank you again. M
This problem was faced by only one user logging to TS 2008 r2 using outlook 2010.The issue was resolved.
Thanks.
Great tip. Thank you!!!! If it helps, I had to use the Control Key and the arrow keys at the same time to bring my window back into view. Worked like a charm.
Thank you, this worked !!!!
Man, you are a fucking god. Thanks a lot, what an annoying bug!!
Awesome, this post solved the issue. Many thanks!