How to stop or disable Network Extension without removing

I develop a Network Extension with NEFilterDataProvider and want to understand how to stop or disable it on exit of the base app without deactivating NE from OS and leave ability to start it again without requiring a password from the user.

It starts normally, but when I try to disable it:

NEFilterManager.sharedManager.enabled = NO;
[NEFilterManager.sharedManager saveToPreferencesWithCompletionHandler:^(NSError * _Nullable error) {
  // never called
}];

the completion handler has never called.

But stopFilterWithReason inside the NE code called by the framework where I only replay with required completionHandler();. Then NE process keeps alive.

I also tried to call remove, which should disable NE:

[NEFilterManager.sharedManager removeFromPreferencesWithCompletionHandler:^(NSError * _Nullable error) {
  // never called
}];

with same result - I freeze forever on waiting completion handler.

So what is the correct way to disable NE without explicit deactivation it by [OSSystemExtensionRequest deactivationRequestForExtension:...]?