Please tell us some basic information before asking for help:
Model Name: ROG 5
Firmware Version: LATEST
Rooted or not: NOT
Frequency of Occurrence: POST RESET
APP Name & APP Version (If your issue relates to the app): FILE MANAGER
In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.
Why Hidden Cabinet is a part of File manager If I can't backup its data? I can't restore its data once phone is reset.
Why there was no warning when I accessed this space for the 1st time, or moved files here?
This buggy phone requires frequent restart and occasional reset. I lost data because of this.