Release 153.3.0esr-bb9

We've shipped Betterbird 153.3.0esr-bb9 today. Please refer to the Release Notes for full details.

In this release, a few issues were fixed for Linux users:

• The main application window will now be restored to its previous position after the next start.
• hyprland and Cinnamon are not officially supported for "minimise to tray".
• Maximised windows will be restored correctly when "minimised to tray".
• High CPU load on X11 system when Betterbird was "minimised to tray". We fixed a bug in the Mozilla platform code to achieve this.

All platforms benefit from the following fixes:

• When using POP accounts, working offline was interrupted by constant "could not connect" error notifications.
• When saving a sent message to a local Sent folder failed, Retry and saving to an alternative location also failed.
• Minor fixes: Folder name not shown correctly in Windows system notification. Most Recent + Alphabetical folder list not sorted correctly. Window control buttons (minimise, maximise, close) missing when menu bar and windows system title bar were hidden.