Fix main navigation bar behavior

app/src/main/kotlin/org/koitharu/kotatsu/core/ui/widgets/SlidingBottomNavigationView.kt

@@ -11,6 +11,7 @@ import android.view.ViewPropertyAnimator
 import androidx.annotation.AttrRes
 import androidx.annotation.StyleRes
 import androidx.coordinatorlayout.widget.CoordinatorLayout
+import androidx.core.view.isVisible
 import androidx.customview.view.AbsSavedState
 import androidx.interpolator.view.animation.FastOutLinearInInterpolator
 import androidx.interpolator.view.animation.LinearOutSlowInInterpolator
@@ -47,6 +48,9 @@ class SlidingBottomNavigationView @JvmOverloads constructor(
 			}
 		}
 
+	val isShownOrShowing: Boolean
+		get() = isVisible && currentState == STATE_UP
+
 	override fun getBehavior(): CoordinatorLayout.Behavior<*> {
 		return behavior
 	}

app/src/main/kotlin/org/koitharu/kotatsu/main/ui/MainActivity.kt

@@ -281,6 +281,7 @@ class MainActivity : BaseActivity<ActivityMainBinding>(), AppBarOwner, BottomNav
 		adjustFabVisibility()
 		bottomNav?.hide()
 		viewBinding.toolbarCard.isInvisible = true
+		updateContainerBottomMargin()
 	}
 
 	override fun onSupportActionModeFinished(mode: ActionMode) {
@@ -288,6 +289,7 @@ class MainActivity : BaseActivity<ActivityMainBinding>(), AppBarOwner, BottomNav
 		adjustFabVisibility()
 		bottomNav?.show()
 		viewBinding.toolbarCard.isInvisible = false
+		updateContainerBottomMargin()
 	}
 
 	private fun onOpenReader(manga: Manga) {
@@ -403,6 +405,7 @@ class MainActivity : BaseActivity<ActivityMainBinding>(), AppBarOwner, BottomNav
 		)
 		bottomNav?.showOrHide(!isOpened)
 		closeSearchCallback.isEnabled = isOpened
+		updateContainerBottomMargin()
 	}
 
 	private fun requestNotificationsPermission() {
@@ -439,7 +442,7 @@ class MainActivity : BaseActivity<ActivityMainBinding>(), AppBarOwner, BottomNav
 
 	private fun updateContainerBottomMargin() {
 		val bottomNavBar = viewBinding.bottomNav ?: return
-		val newMargin = if (bottomNavBar.isPinned) bottomNavBar.height else 0
+		val newMargin = if (bottomNavBar.isPinned && bottomNavBar.isShownOrShowing) bottomNavBar.height else 0
 		with(viewBinding.container) {
 			val params = layoutParams as MarginLayoutParams
 			if (params.bottomMargin != newMargin) {