Client app is vanishing unexpectedly on MacOS

[alewkinr]

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Describe the bug
There is a problem after update of client app on macOS: if user is trying to open VPN with any other tool opened in full-width mode, VPN UI is vanishing unexpectedly.

To reproduce
Open any app in full-screen mode and try to connect to the server VPN in client.

Expected behavior
The pop-over allows to click on it.

Screenshots
Here is a screencast https://github.com/Jigsaw-Code/outline-apps/assets/25941255/b9f29128-ca27-4988-ac2b-46c188f066c6

Client system (please complete the following information):

• Outline Client Version macOS Версия 1.12.1 (474739)
• MacOS

[daniellacosse]

@sbruens fyi

[leeratyou]

confirm

[sbruens]

I was finally able to reproduce this on a Silicon machine. My Intel did not have the problem. This must be something to do with how NSPopoverBehaviorTransient clashes with full-screen mode.