I see no defective behavior in my mouse other than which I describe in which I click on the window list and get a variety of response vectors.
Mate was installed via the instructions as shown at https://linuxconfig.org/how-to-install-mate-desktop-on-ubuntu-20-04-focal-fossa-linux.
The responder has asked the following question:
Do you mean that you literally have only Marco installed as your window manager and that otherwise you're using Ubuntu's GNOME desktop, or do you mean that you have the entirety of MATE installed on Ubuntu (not Ubuntu MATE), or do you mean that you installed Ubuntu MATE (the official packaging), or do you mean something else? Until you clarify all that, we can't help too much.
I am struggling with following the above question, but will give it a shot:
Marco is the window manager as I understand it and is installed from mate along side of Gnome desktop. Mate is selected upon login as separate from the "Ubuntu" item, which I take is now the
default of "Ubuntu"
I have used linux for 2O years and am a retired software developer, I have used ubuntu since 2007 - or so I remember. I used mate along with ubuntu 16.04 and found that just one click on the item in the window list on the panel was sufficient to put that corresponding window in focus.
Please feel free to ask other questions about this behavior. But, please refer to my OP in which I question whether that I might have misconfigured mate or that mate might have been installed as misconfigured and I have not yet found the configuration files for mate.
I have used numerous other window managers and have never experienced such problems in switching windows.
Thanks for the reply. We can fix this.