Open a folder of Assistant threads
Try to get into the vertical ... menu that usually appears to the right of each thread name listing
On mobile, with a touch interface, there is no way to hover over the vertical ... menu next to each assistant thread. You cannot tap in that location to bring up the menu, it only works if visible.

On desktop, when you hover, you get the vertical dot menu as seen in this image.
Since the space is there either way, the vertical ... menu should just be shown all the time. There is no benefit to hiding it; and it breaks the function on mobile.