Clicking the "Grant Permission" button crashes the app

[aper-project]

Hi, there, I've found a crash in version 0.21, which is downloaded from F-Droid.

This crash is caused by clicking the "Grant Permission" button when that permissions are actually granted. It happens when I go the the system setting to grant that permissions (rather than click the button itself).

Here is the video about how I found this crash.

https://user-images.githubusercontent.com/68948244/123374182-5106d380-d5b9-11eb-95e8-ab2f11845fb1.mp4

@FlorentRevest Could you help me review this crash? Very thanks!

[comradekingu]

Observed on LineageOS 17 during setup. Worked fine on 18.