Two updates have been made available for Thunderbird. One for the official version 128.7, as 128.7.1, and one for the test version 135, as 135.0.1. A few corrections have been made in these versions. One more note: Thunderbird 136 will then be officially released by Mozilla. For the time being, you can still stick with 128.

Changes in Thunderbird 128.7.1 ESR

Changes according to the release notes:

• Users may not have been notified if messages arrived in multiple folders at once.

• Message list scrolled to the wrong place on start-up.

• Unified folders could become unusable instead of being automatically rebuilt.

• Some messages may have been threaded incorrectly in unified folders.

• Middle-click autoscroll cursor appeared without arrows instead of expected design.

Changes in Thunderbird 135.0.1

Changes according to the release notes:

The Release channel incorrectly displayed the What's New page after updating.