This is an improvement suggestion.
*I'm a Japanese.

I use Adobe Acrobat Reader(ver.2025.001.20630, 64bit) on Windows11.
My computer has a secondary display.
And My computer has a setting: Where to display taskbar apps when using multiple displays: Open window taskbar.

When opening a PDF file in Adobe Acrobat Reader and displaying it on the main display,
an Adobe Acrobat Reader's icon will appear on the taskbar of the main display.

Then, after I move Adobe Acrobat Reader to the sub-display,
two Adobe Acrobat Reader's icons will appear on the taskbar of the sub-display.

If I move it to the secondary display, I wont that only one icon on the taskbar.