rumps.alert only work first time

[lebr0nli]

After the first successful alert, rumps.alert will freeze the process and can't succeed again even I restart the process.

• python 3.8.8
• rumps 0.3.0
• macOS 11.4

Thanks!

Edited: Debug info

2021-08-06 14:43:27.527 python[5525:199279] <MenuItem: ['Preferences' -> []; callback: <function IproxyBarApp.prefs at 0x7f8569150940>]>
2021-08-06 14:43:27.546 python[5525:199279] alert opened with message: 'test', title: 'test'