[fenix] No issue: Only set toolbar behavior for non custom tab sessions (https://github.com/mozilla-mobile/fenix/pull/2013)

app/src/main/java/org/mozilla/fenix/browser/BrowserFragment.kt

@@ -554,6 +554,9 @@ class BrowserFragment : Fragment(), BackHandler, CoroutineScope {
     }
 
     private fun setToolbarBehavior(loading: Boolean) {
+        if (sessionId?.let { sessionId ->
+                requireComponents.core.sessionManager.findSessionById(sessionId)?.isCustomTabSession() == true
+            } == true) return
         val toolbarView = toolbarComponent.uiView.view
         (toolbarView.layoutParams as CoordinatorLayout.LayoutParams).apply {
             // Stop toolbar from collapsing if TalkBack is enabled or page is loading