Thunderbird Community Forum

I'm having troubles with Thunderbird version 140.6.0esr(64-bits) on Ubuntu 25.10 (fully updated). It's installed as a snap.

The first problem is that I have a selected mail with an attachment, but nowhere in the mail itself I can see or find or open or download that attachment.

The second problem is that for the inbox and mail body I can't scroll. There are no scrollbars, and the mouse-wheel doesn't work.

Is it a problem with snap? With Ubuntu? Or with Thunderbird itself? Could if be a configuration problem (I've tried quite a lot of things already)?

What is the best way to downgrade from Thunderbird 146.0.1 to the most recent esr release (140.6.0esr?) I seem to recall reading that 146 featured some new data formats that may not be compatible with 140, but I don't find the specifics right now.

The reason I'm downgrading is bugs. I'm aware of the folder naming issue, which I dealt with. But I find a new (to me) bug where 146 will not play notification sounds. This occurs on two of the four (Windows 10 and 11) computers in my house.