In multiple monitors setup, if you want the Taskbar to display the application icon where it is opened, then change the Taskbar settings as followed. The setting is located at Settings > Personalization > Taskbar and set Show taskbar buttons on = Taskbar where window is open.
About the author
Xuan Ngo is the founder of OpenWritings.net. He currently lives in Montreal, Canada. He loves to write about programming and open source subjects.