diff --git a/mastodon/src/main/java/org/joinmastodon/android/fragments/ComposeFragment.java b/mastodon/src/main/java/org/joinmastodon/android/fragments/ComposeFragment.java
index 5557b787c..b05ecc094 100644
--- a/mastodon/src/main/java/org/joinmastodon/android/fragments/ComposeFragment.java
+++ b/mastodon/src/main/java/org/joinmastodon/android/fragments/ComposeFragment.java
@@ -766,6 +766,7 @@ public class ComposeFragment extends MastodonToolbarFragment implements ComposeE
 				sendingOverlay=null;
 				removeBackCallback(sendingBackButtonBlocker);
 				removeBackCallback(discardConfirmationCallback);
+				removeBackCallback(emojiKeyboardHider);
 				if(editingStatus==null){
 					E.post(new StatusCreatedEvent(result, accountID));
 					if(replyTo!=null){
diff --git a/mastodon/src/main/java/org/joinmastodon/android/fragments/onboarding/InstanceCatalogSignupFragment.java b/mastodon/src/main/java/org/joinmastodon/android/fragments/onboarding/InstanceCatalogSignupFragment.java
index 68a9c8903..765941d46 100644
--- a/mastodon/src/main/java/org/joinmastodon/android/fragments/onboarding/InstanceCatalogSignupFragment.java
+++ b/mastodon/src/main/java/org/joinmastodon/android/fragments/onboarding/InstanceCatalogSignupFragment.java
@@ -144,6 +144,7 @@ public class InstanceCatalogSignupFragment extends InstanceCatalogFragment{
 
 	@Override
 	public void onDestroy(){
+		removeBackCallback(exitQueryModeCallback);
 		super.onDestroy();
 	}
 
diff --git a/mastodon/src/main/java/org/joinmastodon/android/fragments/onboarding/InstanceChooserLoginFragment.java b/mastodon/src/main/java/org/joinmastodon/android/fragments/onboarding/InstanceChooserLoginFragment.java
index 38ed1c534..b1ea11282 100644
--- a/mastodon/src/main/java/org/joinmastodon/android/fragments/onboarding/InstanceChooserLoginFragment.java
+++ b/mastodon/src/main/java/org/joinmastodon/android/fragments/onboarding/InstanceChooserLoginFragment.java
@@ -100,6 +100,8 @@ public class InstanceChooserLoginFragment extends InstanceCatalogFragment{
 				.setCallback(new Callback<>(){
 					@Override
 					public void onSuccess(List<CatalogInstance> result){
+						if(getActivity()==null)
+							return;
 						data.clear();
 						data.addAll(sortInstances(result));
 						updateFilteredList();
diff --git a/mastodon/src/main/java/org/joinmastodon/android/fragments/settings/EditFilterFragment.java b/mastodon/src/main/java/org/joinmastodon/android/fragments/settings/EditFilterFragment.java
index 83f1f43f4..3f3e4ada1 100644
--- a/mastodon/src/main/java/org/joinmastodon/android/fragments/settings/EditFilterFragment.java
+++ b/mastodon/src/main/java/org/joinmastodon/android/fragments/settings/EditFilterFragment.java
@@ -97,6 +97,12 @@ public class EditFilterFragment extends BaseSettingsFragment<Void>{
 		setRetainInstance(true);
 	}
 
+	@Override
+	public void onDestroy(){
+		removeBackCallback(confirmCallback);
+		super.onDestroy();
+	}
+
 	@Override
 	protected void doLoadData(int offset, int count){}
 
diff --git a/mastodon/src/main/java/org/joinmastodon/android/ui/displayitems/HeaderStatusDisplayItem.java b/mastodon/src/main/java/org/joinmastodon/android/ui/displayitems/HeaderStatusDisplayItem.java
index b5034f57d..3dd2825fc 100644
--- a/mastodon/src/main/java/org/joinmastodon/android/ui/displayitems/HeaderStatusDisplayItem.java
+++ b/mastodon/src/main/java/org/joinmastodon/android/ui/displayitems/HeaderStatusDisplayItem.java
@@ -133,7 +133,8 @@ public class HeaderStatusDisplayItem extends StatusDisplayItem{
 			more=findViewById(R.id.more);
 			extraText=findViewById(R.id.extra_text);
 			clickableThing=findViewById(R.id.clickable_thing);
-			clickableThing.setOnClickListener(this::onAvaClick);
+			if(clickableThing!=null)
+				clickableThing.setOnClickListener(this::onAvaClick);
 			avatar.setOutlineProvider(OutlineProviders.roundedRect(10));
 			avatar.setClipToOutline(true);
 			more.setOnClickListener(this::onMoreClick);
@@ -272,8 +273,10 @@ public class HeaderStatusDisplayItem extends StatusDisplayItem{
 				extraText.setText(item.extraText);
 			}
 			more.setVisibility(item.inset ? View.GONE : View.VISIBLE);
-			clickableThing.setClickable(!item.inset);
-			clickableThing.setContentDescription(item.parentFragment.getString(R.string.avatar_description, item.user.acct));
+			if(clickableThing!=null){
+				clickableThing.setClickable(!item.inset);
+				clickableThing.setContentDescription(item.parentFragment.getString(R.string.avatar_description, item.user.acct));
+			}
 		}
 
 		@Override
diff --git a/mastodon/src/main/java/org/joinmastodon/android/ui/viewcontrollers/ComposeMediaViewController.java b/mastodon/src/main/java/org/joinmastodon/android/ui/viewcontrollers/ComposeMediaViewController.java
index e39309718..6e1ba7f59 100644
--- a/mastodon/src/main/java/org/joinmastodon/android/ui/viewcontrollers/ComposeMediaViewController.java
+++ b/mastodon/src/main/java/org/joinmastodon/android/ui/viewcontrollers/ComposeMediaViewController.java
@@ -550,7 +550,7 @@ public class ComposeMediaViewController{
 	}
 	
 	public List<String> getAttachmentIDs(){
-		return attachments.stream().map(a->a.serverAttachment.id).collect(Collectors.toList());
+		return attachments.stream().filter(a->a.serverAttachment!=null).map(a->a.serverAttachment.id).collect(Collectors.toList());
 	}
 
 	public List<CreateStatus.Request.MediaAttribute> getAttachmentAttributes(){