Fix expanding an added TreeGrid node (#11018)

Fixes #9997

1 files changed, 4 insertions, 7 deletions

diff --git a/server/src/main/java/com/vaadin/data/provider/DataCommunicator.java b/server/src/main/java/com/vaadin/data/provider/DataCommunicator.java
index 3df69d45f3..f5d2d087e6 100644
--- a/server/src/main/java/com/vaadin/data/provider/DataCommunicator.java
+++ b/server/src/main/java/com/vaadin/data/provider/DataCommunicator.java
@@ -665,7 +665,8 @@ public class DataCommunicator<T> extends AbstractExtension {
         if (isAttached()) {
             attachDataProviderListener();
         }
-        hardReset();
+        reset = true;
+        markAsDirty();
 
         return filter -> {
             if (this.dataProvider != dataProvider) {
@@ -764,16 +765,12 @@ public class DataCommunicator<T> extends AbstractExtension {
                         generators.forEach(g -> g.refreshData(item));
                         getUI().access(() -> refresh(item));
                     } else {
-                        getUI().access(this::hardReset);
+                        reset = true;
+                        getUI().access(() -> markAsDirty());
                     }
                 });
     }
 
-    private void hardReset() {
-        reset = true;
-        markAsDirty();
-    }
-
     private void detachDataProviderListener() {
         if (dataProviderUpdateRegistration != null) {
             dataProviderUpdateRegistration.remove();