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(macOS) VM window steals focus periodically when using Bridged networking #7649

@foadrgithub

Description

@foadrgithub

Describe the issue
When a VM is configured with Bridged networking mode, the UTM window periodically comes to the foreground and steals focus from whatever app I'm working in. This does not happen when using Shared Network mode. The focus steal seems to coincide with network link-state changes on the bridged interface.
How to reproduce

Configure a VM with Bridged (Advanced) networking
Start the VM
Switch to another app and work normally
After some time, the UTM window will jump to the foreground without any user interaction

Expected behavior
The UTM window should not come to the foreground unless the user explicitly switches to it.
Configuration

UTM Version: [your version]
macOS Version: [your version]
Hardware: [e.g., Apple Silicon M1/M2/M3]
Guest OS: macOS
Network mode: Bridged (Advanced)

Notes
The process "Virtual Machine Service for UTM" may be involved in triggering the focus change.

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