sync hung up on idle state when select phone storage

[hrabid]

Platform

• iOS (version: )
• Android (version: 10)

SyncUp version
v1.1.15

Describe the bug
the app work properly if i select the app storage. but syncing just hung in idle state if i select phone storage (not external SD Card btw).

• storage permission is okey

is it expected behavior or bug?

Screenshots

• first one is on phone storage and it just hung up is stage forever
• second one syncing fine with app storage