diff --git a/iNaturalist/src/main/java/org/inaturalist/android/CommentsIdsAdapter.java b/iNaturalist/src/main/java/org/inaturalist/android/CommentsIdsAdapter.java
index 4c9fb99c..75a835ad 100644
--- a/iNaturalist/src/main/java/org/inaturalist/android/CommentsIdsAdapter.java
+++ b/iNaturalist/src/main/java/org/inaturalist/android/CommentsIdsAdapter.java
@@ -542,10 +542,20 @@ public static String formatIdDate(Context context, Timestamp postDate, BetterJSO
 		// Only show month/year for observations that you don't own + obscured/private
 		INaturalistApp app = (INaturalistApp) context.getApplicationContext();
 		String currentUser = app.currentUserLogin();
+		String obsUser = null;
+
+		if (observation != null) {
+			if (observation.getJSONObject("user") != null &&
+					observation.getJSONObject("user").has("login")) {
+				obsUser = observation.getJSONObject("user").optString("login");
+			} else {
+				obsUser = observation.getString("user_login");
+			}
+		}
 		boolean obsByUser = observation != null &&
 				currentUser != null &&
-				observation.getJSONObject("user") != null &&
-				observation.getJSONObject("user").optString("login", "").equals(currentUser);
+				obsUser != null &&
+				obsUser.equals(currentUser);
 		boolean isPrivateOrObscured = false;
 
 		if (observation != null) {
diff --git a/iNaturalist/src/main/java/org/inaturalist/android/INaturalistApp.java b/iNaturalist/src/main/java/org/inaturalist/android/INaturalistApp.java
index 494a19ef..1cd5433d 100644
--- a/iNaturalist/src/main/java/org/inaturalist/android/INaturalistApp.java
+++ b/iNaturalist/src/main/java/org/inaturalist/android/INaturalistApp.java
@@ -127,6 +127,7 @@ public class INaturalistApp extends MultiDexApplication implements OnMapsSdkInit
     private long mAppStartTime;
 
     private boolean mCalledStartForeground = false;
+    private String mInstallationID = null;
 
     public boolean hasCalledStartForeground() {
         return mCalledStartForeground;
@@ -157,6 +158,10 @@ public void setShownOnboarding(boolean value) {
         mOnboardingShownBefore = true;
     }
 
+    public String getInstallationID() {
+        return mInstallationID;
+    }
+
     @Override
     public void onMapsSdkInitialized(@NonNull MapsInitializer.Renderer renderer) {
         switch (renderer) {
@@ -328,6 +333,14 @@ public void run() {
             setShownOnboarding(true);
         }
 
+        String installationID = pref.getString("installation_id", null);
+        if (installationID == null) {
+            installationID = UUID.randomUUID().toString();
+            pref.edit().putString("installation_id", installationID).apply();
+        }
+
+        mInstallationID = installationID;
+
         // Clear out any old cached photos
         Intent serviceIntent = new Intent(INaturalistService.ACTION_CLEAR_OLD_PHOTOS_CACHE, null, this, INaturalistService.class);
         INaturalistService.callService(this, serviceIntent);
diff --git a/iNaturalist/src/main/java/org/inaturalist/android/INaturalistServiceImplementation.java b/iNaturalist/src/main/java/org/inaturalist/android/INaturalistServiceImplementation.java
index 74a92bbe..2fa8cd6d 100644
--- a/iNaturalist/src/main/java/org/inaturalist/android/INaturalistServiceImplementation.java
+++ b/iNaturalist/src/main/java/org/inaturalist/android/INaturalistServiceImplementation.java
@@ -5864,6 +5864,7 @@ private JSONArray request(String url, String method, ArrayList<Pair<String, Stri
                 .build();
         Request.Builder requestBuilder = new Request.Builder()
                 .addHeader("User-Agent", getUserAgent(mApp))
+                .addHeader("X-Installation-ID", mApp.getInstallationID())
                 .url(url);
 
         mRetryAfterDate = null;
diff --git a/iNaturalist/src/main/java/org/inaturalist/android/ObservationViewerFragment.java b/iNaturalist/src/main/java/org/inaturalist/android/ObservationViewerFragment.java
index 18fb2d8e..ced70fa2 100644
--- a/iNaturalist/src/main/java/org/inaturalist/android/ObservationViewerFragment.java
+++ b/iNaturalist/src/main/java/org/inaturalist/android/ObservationViewerFragment.java
@@ -1212,7 +1212,8 @@ private void refreshFavorites() {
             mRemoveFavorite.setVisibility(View.GONE);
         }
 
-        mFavoritesAdapter = new FavoritesAdapter(getActivity(), mFavorites, new BetterJSONObject(mObsJson));
+        mFavoritesAdapter = new FavoritesAdapter(getActivity(), mFavorites,
+                mObsJson != null ? new BetterJSONObject(mObsJson) : new BetterJSONObject(mObservation.toJSONObject()));
         mFavoritesList.setAdapter(mFavoritesAdapter);
 
         mRemoveFavorite.setOnClickListener(new OnClickListener() {