Fix #852

mastodon/build.gradle

@@ -13,7 +13,7 @@ android {
 		applicationId "org.joinmastodon.android"
 		minSdk 23
 		targetSdk 33
-		versionCode 102
+		versionCode 103
 		versionName "2.5.1"
 		testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
 	}

mastodon/src/main/java/org/joinmastodon/android/fragments/ComposeFragment.java

@@ -404,6 +404,21 @@ public class ComposeFragment extends MastodonToolbarFragment implements ComposeE
 		super.onResume();
 	}
 
+	@Override
+	protected void onHidden(){
+		super.onHidden();
+		if(prevHadDraft){
+			prevHadDraft=false;
+			removeBackCallback(discardConfirmationCallback);
+		}
+	}
+
+	@Override
+	protected void onShown(){
+		super.onShown();
+		updateDraftState();
+	}
+
 	@Override
 	public void onViewCreated(View view, Bundle savedInstanceState){
 		super.onViewCreated(view, savedInstanceState);