In Kagi Assistant, when you hover over those lines at the left side of the screen, there is a popup window with all the prompts you have made in the thread. If the thread is long enough, this popup gets cut off, and you cannot see the latest prompts there anymore.
Example:

I get that this is an unreasonably long thread, but in my case, this ended up being necessary, and context limit didn't end up being a problem.
You can still easily navigate to these prompts just by clicking the lines instead of the popup, but you won't be able to see the start of the sentence.
I wish I could scroll within the popup, so that I can preview the start of each prompt, and easily be able to find the right one I want to go to.
It would also be nice if it automatically scrolls down the popup as you are hovering over the lines on the left side. They already highlight the matching prompt, so it would make sense if it scrolled down to show the highlighted prompt.