diff --git a/vector/src/main/java/im/vector/app/features/media/VectorAttachmentViewerActivity.kt b/vector/src/main/java/im/vector/app/features/media/VectorAttachmentViewerActivity.kt
index c632a008ce..158dbfdaae 100644
--- a/vector/src/main/java/im/vector/app/features/media/VectorAttachmentViewerActivity.kt
+++ b/vector/src/main/java/im/vector/app/features/media/VectorAttachmentViewerActivity.kt
@@ -29,6 +29,7 @@ import androidx.core.view.ViewCompat
 import androidx.core.view.isInvisible
 import androidx.core.view.isVisible
 import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.lifecycleScope
 import androidx.transition.Transition
 import im.vector.app.R
 import im.vector.app.core.di.ActiveSessionHolder
@@ -131,7 +132,7 @@ class VectorAttachmentViewerActivity : AttachmentViewerActivity(), BaseAttachmen
         if (savedInstanceState == null) {
             pager2.setCurrentItem(initialIndex, false)
             // The page change listener is not notified of the change...
-            pager2.post {
+            lifecycleScope.launchWhenResumed {
                 onSelectedPositionChanged(initialIndex)
             }
         }
diff --git a/vector/src/main/java/im/vector/app/features/userdirectory/UserListFragment.kt b/vector/src/main/java/im/vector/app/features/userdirectory/UserListFragment.kt
index 96f459cbbf..4a87d13021 100644
--- a/vector/src/main/java/im/vector/app/features/userdirectory/UserListFragment.kt
+++ b/vector/src/main/java/im/vector/app/features/userdirectory/UserListFragment.kt
@@ -25,6 +25,7 @@ import android.view.ViewGroup
 import android.widget.ScrollView
 import androidx.core.view.forEach
 import androidx.core.view.isVisible
+import androidx.lifecycle.lifecycleScope
 import com.airbnb.mvrx.activityViewModel
 import com.airbnb.mvrx.args
 import com.airbnb.mvrx.fragmentViewModel
@@ -171,7 +172,7 @@ class UserListFragment @Inject constructor(
 
         // Scroll to the bottom when adding chips. When removing chips, do not scroll
         if (newNumberOfChips >= currentNumberOfChips) {
-            views.chipGroupScrollView.post {
+            viewLifecycleOwner.lifecycleScope.launchWhenResumed {
                 views.chipGroupScrollView.fullScroll(ScrollView.FOCUS_DOWN)
             }
         }