Lose focus when collapse all messages Rated 5 out of 5 stars

My favorite 5 stars. Thank you!!!
But when I set the add-on to collapse all the messages by default, I cannot focus on the clicked message within the whole thread. Can this be improved?
It would be nice if we can set to show 3 lines or more text (optional) when messages collapsed during threading.
It would also be nice if default view of an expanded message will only show about 5-6 lines (optional) of the total 10 or 20 lines (sometimes a quoted message will not collapse...).
Both are my personal idea, not that important.

Not to the topic, if we can have 2 or more lines (option setting) in the message list panel, then we can have vertical view and no problem for reading space. We are waiting for TBxxx.

This review is for a previous version of the add-on (2.2).  This user has 2 previous reviews of this add-on.