Fix navigation issue when activity is recreated

app/src/main/java/eu/kanade/tachiyomi/ui/main/MainActivity.kt

@@ -55,7 +55,9 @@ import eu.kanade.tachiyomi.util.system.InternalResourceHelper
 import eu.kanade.tachiyomi.util.system.getResourceColor
 import eu.kanade.tachiyomi.util.system.toast
 import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.drop
 import kotlinx.coroutines.flow.launchIn
+import kotlinx.coroutines.flow.onEach
 import timber.log.Timber
 import java.util.Date
 import java.util.concurrent.TimeUnit
@@ -224,8 +226,9 @@ class MainActivity : BaseViewBindingActivity<MainActivityBinding>() {
             .asImmediateFlow { binding.downloadedOnly.isVisible = it }
             .launchIn(lifecycleScope)
 
-        preferences.incognitoMode()
-            .asImmediateFlow {
+        preferences.incognitoMode().asFlow()
+            .drop(1)
+            .onEach {
                 binding.incognitoMode.isVisible = it
 
                 // Close BrowseSourceController and its MangaController child when incognito mode is disabled