Summary: When using Firefox across multiple virtual desktops in Windows, opening a web link via the Windows Run command causes an unwanted switch to a different virtual desktop if Firefox is already running there. Steps to Reproduce: Set up two virtual desktops (Desktop 1 and Desktop 2) in Windows. On Desktop 2, open Firefox. Switch back to Desktop 1. Use the Windows Run command (Win+R) on Desktop 1, type a URL (e.g., www.google.com), and press Enter. Expected Behavior: The URL should open in a new Firefox window on the current desktop (Desktop 1), or if Firefox is already running on Desktop 1, it should open a new tab in that instance. The current virtual desktop should remain active, and the system should not switch to another desktop. Actual Behavior: Instead of staying on Desktop 1, Windows switches to Desktop 2, where Firefox is already open, and the URL is loaded in a new tab. This forces the user to leave their current workspace on Desktop 1. Proposed Solution: Firefox should either: Open a new instance of Firefox on the current virtual desktop (Desktop 1) if Firefox is not already running there, or Open a new tab in the existing Firefox window on the current desktop, avoiding the switch to another virtual desktop.
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