IssueTracker

This is fixed and will be available in the Navigation 2.3.1 release.

I guess the release that addresses this is actually: androidx.compose.material:material-navigation:1.7.0-alpha04

As #13 said, we are missing this for Material3 bottom sheets. I see that there's another issue tracking that here: https://issuetracker.google.com/issues/328949006

Some guidance about usage would be very welcome. I get java.lang.IllegalStateException: Could not find Navigator with name "bottomSheet". You must call NavController.addNavigator() for each navigation type. crash and can't find any proper example of this new extension usage:

                Scaffold(
                    bottomBar = {...}
                      
                ) { innerPadding ->

                    NavHost(
                        navController,
                        startDestination = "explore_graph",
                        Modifier.fillMaxSize()
                    ) {
                        // nested graphs

                        bottomSheet("profile_bottom_sheet") { // CRASHES
                            Text("Bottom Sheet", Modifier.padding(16.dp))
                        }
                    }
                }
            }
        }
    }
}

I use androidx.compose.material:material-navigation:1.7.0-beta01, but my project is material3, could it be the reason?

Re comment#15 - Material Navigation works similarly to Accompanist, whose docs explain how to use it, including these two lines:

val bottomSheetNavigator = rememberBottomSheetNavigator()
val navController = rememberNavController(bottomSheetNavigator)

If you don't use those lines, you'd get that error message.