OMG the latest #Thunderbird update (115).

But finally stumbled across a Reddit post that helped me fix the most objectionable (to me) change:

reddit.com/r/Thunderbird/comme…

After the updated, the message list seemed cramped, line height way too small.

This is because the default "density" changed from, I guess, medium to compact?

That setting lives under the "hamburger menu" (three horizontal lines in the upper right)

Changed it back to medium density, breathed a sigh of relief.