Recently, there was an update changing the appearance of the window with tracked topics.
After the update, the descriptions/notes made while following the topic are nowhere to be seen.

the above was very convenient and helpful.

You can still add/edit notes to a tracked topic when you click on the hourglass icon.
Any previously added notes are still visible in the edit window.

Yes, you right.
I didn't notice that icon.
It's a pity that the description is not immediately visible.
But hey, you can't please everyone