https://telegra.ph/QuickPic-Gallery-Mod-FAQ-01-19-2
>>>
SD card folders (Android 11)

Due to changes in the behavior of external storage QuickPic is unable to show folders from external storage, both in explore mode and in folder options and more... This is an unsolved error for this mod, so do not report bugs related to this problem.
<<<

はー。androidの外部SDの扱いは険しくなるばかりだな。実際どんな理由で制限掛けてるのか誰か教えてほしいな。