I'm using 20.04.2 LTS ubuntu dektop. When I use a program, say, Firefox, there is a dot by the launcher icon showing there is an active application for that program. I can click on the active icon and the active window of that program pops up.
This works for every application except Chromium (Version 90.0.4430.85),which happens to be the top icon if that makes any difference. In this case, there is an active window of Chromium, with several tabs, but it does not show a dot for "active application". When I click on the Chromium icon, it opens a new window, and the active icon dot shows up. I cannot get back to the first instance of the program using the launcher icon, like all other programs. Alt Tab (and the other usual methods of switching programs) is the only way to get to that first active Chromium window.
How can I get Chromium to behave like other programs, showing an active icon when there is one instance of the program running?