Merge branch 'master' into alyssa-starter

1 files changed, 6 insertions, 4 deletions

diff --git a/src/client/views/nodes/DocumentView.tsx b/src/client/views/nodes/DocumentView.tsx
index 73c13b5dd..e8b0fc4ba 100644
--- a/src/client/views/nodes/DocumentView.tsx
+++ b/src/client/views/nodes/DocumentView.tsx
@@ -1500,7 +1500,8 @@ ScriptingGlobals.add(function updateTagsCollection(collection: Doc) {
     let created = false;
     const matchedDocs = matchedTags
         .filter(tagDoc => !Doc.AreProtosEqual(collection, tagDoc))
-        .map(tagDoc => {
+        .reduce((aset, tagDoc) => {
+            if (Array.from(aset).find(doc => Doc.AreProtosEqual(tagDoc, doc))) return aset;
             let embedding = collectionDocs.find(doc => Doc.AreProtosEqual(tagDoc, doc));
             if (!embedding) {
                 embedding = Doc.MakeEmbedding(tagDoc);
@@ -1510,9 +1511,10 @@ ScriptingGlobals.add(function updateTagsCollection(collection: Doc) {
                 wid += NumCast(tagDoc._width);
                 created = true;
             }
-            return embedding;
-        });
+            aset.add(embedding);
+            return aset;
+        }, new Set<Doc>());
 
-    created && (collection[DocData].data = new List<Doc>(matchedDocs));
+    created && (collection[DocData].data = new List<Doc>(Array.from(matchedDocs)));
     return true;
 });