My Site Dropdown Menu

Hello and good day. I have but a simple question.
Is the drop-down menu of the [My Sites] limited? I’ve added more sites to our multisite, yet the drop-down menu is only showing the first 13 sites (excluding the [Network Admin]).

Is there a way to display all sites on the drop-down menu? If not, is there a way to arrange which sites to be displayed on the drop-down menu?

Many thanks!