Reproduction steps:
1. Create a new project and install Mobile Notifications Package via Package Manager
2. Go Edit -> Project Settings -> Mobile Notification Settings
3. Switch to iOS tab
4. Enable Push Notifications
5. Try setting Remote Notification Foreground Presentation Options to "Nothing" (read Note 2)

Expected result: Remote Notification Foreground Presentation Options will be set to "Nothing"
Actual result: Remote Notification Foreground Presentation Options will be set to "All" (read Notes)

Reproducible with: Mobile Notifications 1.21 - preview (2018.4.22f1), Mobile Notifications 1.02, 1.03 (2020.1.0b10, 2020.2.0a13)
Could not test with earlier Package versions because of errors when downgrading the package

Notes:
1. Manually unchecking each option results in Remote Notification Foreground Presentation Options going from "Mixed" to "All when the last option is unchecked
2. The same issue happens with Default Notification Authorization Options
3. A video is attached