Fix removing rows from the middle of Escalator (#8826)

* Fix removing rows from the middle of Escalator

Fixes #8825

1 files changed, 2 insertions, 8 deletions

diff --git a/client/src/main/java/com/vaadin/client/widgets/Escalator.java b/client/src/main/java/com/vaadin/client/widgets/Escalator.java
index 7eb99badf7..5cfad18540 100644
--- a/client/src/main/java/com/vaadin/client/widgets/Escalator.java
+++ b/client/src/main/java/com/vaadin/client/widgets/Escalator.java
@@ -3130,14 +3130,8 @@ public class Escalator extends Widget
                         y += spacerContainer.getSpacerHeight(i);
                     }
 
-                    /*
-                     * this is how many rows appeared into the viewport from
-                     * below
-                     */
-                    final int rowsToUpdateDataOn = numberOfRows
-                            - escalatorRowsToRemove;
-                    final int start = Math.max(0,
-                            escalatorRowCount - rowsToUpdateDataOn);
+                    // #8825 update data starting from the first moved row
+                    final int start = dirtyRowsStart;
                     final int end = escalatorRowCount;
                     for (int i = start; i < end; i++) {
                         final TableRowElement tr = visualRowOrder.get(i);