When using Adobe Acrobat Reader on Windows 11 with an extended screen setup, moving a PDF document window from one monitor to another causes the taskbar to display duplicate thumbnails for that single document. For example, opening 3 documents results in 6 thumbnails after dragging the windows between screens. Only 3 actual windows are open.
This seems to happen when monitors have different DPI scaling, and the issue persists even after switching between tabbed and windowed document modes. No other apps (e.g. browsers, Foxit, MS Word) exhibit this behavior under similar conditions.
Steps to reproduce:
1. Use a dual-monitor setup with different scaling/resolution.
2. Open 1–3 PDFs in Adobe Acrobat Reader (windowed mode).
3. Drag the windows across monitors.
4. Hover over the Reader icon in the taskbar — duplicate previews appear.
Expected behavior:
Only one thumbnail per open document should be shown, regardless of screen movement.
When using Adobe Acrobat Reader on Windows 11 with an extended screen setup, moving a PDF document window from one monitor to another causes the taskbar to display duplicate thumbnails for that single document. For example, opening 3 documents results in 6 thumbnails after dragging the windows between screens. Only 3 actual windows are open.
This seems to happen when monitors have different DPI scaling, and the issue persists even after switching between tabbed and windowed document modes. No other apps (e.g. browsers, Foxit, MS Word) exhibit this behavior under similar conditions.
Steps to reproduce:
1. Use a dual-monitor setup with different scaling/resolution.
2. Open 1–3 PDFs in Adobe Acrobat Reader (windowed mode).
3. Drag the windows across monitors.
4. Hover over the Reader icon in the taskbar — duplicate previews appear.
Expected behavior:
Only one thumbnail per open document should be shown, regardless of screen movement.