ดาวน์โหลด Mozilla Thunderbird 115.9.0

Fixes
Opened ignored messages in a message thread/subthread were not marked as read in IMAP folders
Multi-language spellcheck sometimes skipped languages
Thread tree did not update when live language switching
Visual improvements to "Reorder Attachments" popup
Sort order was sometimes incorrect in Grouped By views
Selecting "Match all messages" in Filter Rules dialog did not disable all search criteria
S/MIME-only signed messages sometimes incorrectly displayed signature as invalid
OpenPGP keys uploaded to an HKP keyserver were sent with the wrong Content-Type header
Keyboard navigation within search toolbar did not work
Flatpak builds only had the en-US spell check dictionary available
Security fixes