diff --git a/src/editor-mode/state-fields/decoSetField.ts b/src/editor-mode/state-fields/decoSetField.ts
index 3fdade1..4bf68ae 100644
--- a/src/editor-mode/state-fields/decoSetField.ts
+++ b/src/editor-mode/state-fields/decoSetField.ts
@@ -5,23 +5,32 @@ import { EditorView } from "@codemirror/view";
 /** Stores only height-altering decorations. */
 export const decoSetField = StateField.define({
     create(state) {
-        let builder = state.field(builderField);
+        let holder = state.field(builderField).holder;
         return {
-            lineBreaksSet: builder.holder.lineBreaksSet,
-            blockOmittedSet: builder.holder.blockOmittedSet
+            lineBreaksSet: holder.lineBreaksSet,
+            blockOmittedSet: holder.blockOmittedSet
         };
     },
     update(decoSet, transaction) {
-        let builder = transaction.state.field(builderField);
+        let holder = transaction.state.field(builderField).holder;
+        // Avoid `EditorView.decorations` recomputation while the sets haven't
+        // changed/updated yet. It's done by returning same object rather than
+        // creating the new one, though the same holder.
+        if (
+            holder.lineBreaksSet === decoSet.lineBreaksSet &&
+            holder.blockOmittedSet === decoSet.blockOmittedSet
+        ) { return decoSet }
         return {
-            lineBreaksSet: builder.holder.lineBreaksSet,
-            blockOmittedSet: builder.holder.blockOmittedSet
+            lineBreaksSet: holder.lineBreaksSet,
+            blockOmittedSet: holder.blockOmittedSet
         };
     },
     provide(field) {
+        // The both sets replace line breaks with "<br>" or hide it. Hence, we
+        // need providing it directly, i.e. not in the view update.
         return [
             EditorView.decorations.from(field, set => set.blockOmittedSet),
             EditorView.decorations.from(field, set => set.lineBreaksSet)
         ]
-    },
+    }
 });
\ No newline at end of file