one ui problem

[Anuj1996]

If you open Secure Folder and lock the screen then when you'll unlock the screen,  it'll ask your chosen lock screen type for Secure Folder and then the notification panel will freeze and recent key will go unresponsive and missing. 
Even the Secure Folder freezes and won't open. 
I've attached the screenshot. 

Check out the missing recent key.

[नvन]

my c9pro is running on oreo & even on naught, secure folder works the same.

[Anuj1996]

This never happened with me before, I've used Secure Folder with Note 8 and Note 9.

[नvन]

after opening the secure folder....
there r only two options
1 . you must unlock it
2. only back key will work to close the app.

try it now....