Macos - Tab not closed after exit

[duongtugiang]

Clear Reproduction Steps
I just updated to the newest Rio version and found a regression. Here is the exact behavior:

1. Launch Rio and open multiple tabs (e.g., 3 tabs).
2. In two of those tabs, type exit and press Enter.
3. The affected tabs freeze for a few seconds and do not close.
4. After waiting a few seconds, click inside one of the frozen tabs — it immediately closes/disappears.

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Version Behavior
• Last working version: 0.3.11
• Bug appears starting from: any version after 0.3.11
Mac Sequoia

[cantona]

Fix: #1688