Screen reader mode - DataSource updateData causes exception

[michaelaveva]

Hi,

When screen reader mode is enabled and a row is selected and focused in a ListGrid, then using updateData() to update a record in the underlying data source causes the following exception:

Uncaught NotFoundError: Failed to execute 'removeChild' on 'Node': The node to be removed is no longer a child of this node. Perhaps it was moved in a 'blur' event handler?
at _3.isc_Canvas__updateParentHTML [as $p9] (ISC_Core.js:15133:170)
at _3.isc_c_Class_invokeSuper [as invokeSuper] (ISC_Core.js:621:15)
at _3.isc_GridRenderer__updateParentHTML [as $p9] (ISC_Grids.js:305:1008)
at _3.isc_Canvas__updateHTML [as $ra] (ISC_Core.js:15119:19)
at _3.isc_Canvas_redraw [as redraw] (ISC_Core.js:15108:186)
at _3.isc_c_Class_invokeSuper [as invokeSuper] (ISC_Core.js:621:15)
at _3.isc_GridRenderer_redraw [as redraw] (ISC_Grids.js:719:412)
at _3.isc_c_Class_invokeSuper [as invokeSuper] (ISC_Core.js:621:15)
at _3.isc_GridBody_redraw [as redraw] (ISC_Grids.js:850:23)
at _3.isc_ListGrid_refreshRow [as refreshRow] (ISC_Grids.js:2459:54)
at _3.isc_ListGrid__dataChanged [as $253v] (ISC_Grids.js:1243:6)
at _3.isc_ListGrid_dataChanged [as dataChanged] (ISC_Grids.js:1213:88)
at _3.<anonymous> (ISC_Grids.js:1181:287)
at _3.observation [as dataChanged] (ISC_Core.js:746:382)
at _3.isc_ResultSet__doneChangingData [as $ee] (ISC_DataBinding.js:12953:29)
at _3.isc_ResultSet_handleUpdate [as handleUpdate] (ISC_DataBinding.js:12950:33)
at _3.isc_ResultSet_dataSourceDataChanged [as dataSourceDataChanged] (ISC_DataBinding.js:12944:6)
at _3.eval (eval at isc__makeFunction (ISC_Core.js:161:1135), <anonymous>:4:10)
at _3.thunk (ISC_Core.js:752:28)
at _3.observation [as dataChanged] (ISC_Core.js:746:382)
at _3.isc_DataSource_updateCaches [as updateCaches] (ISC_DataBinding.js:2541:6)
at Object.isc_c_DataSource_handleUpdate [as handleUpdate] (ISC_DataBinding.js:955:4)
at _3.isc_DataSource_fireResponseCallbacks [as fireResponseCallbacks] (ISC_DataBinding.js:4278:16)
at _3.isc_DataSource__completeResponseProcessing [as $38b] (ISC_DataBinding.js:4253:6)
at _3._6 (ISC_DataBinding.js:2922:6)
at _3.isc_DataSource__handleClientOnlyReply [as $50e] (ISC_DataBinding.js:2928:4)
at _3.isc_c_Class_fireCallback [as fireCallback] (ISC_Core.js:654:102)
at _3.isc_Class_fireCallback [as fireCallback] (ISC_Core.js:893:89)
at _3.isc_c_RPCManager_fireReplyCallback [as __fireReplyCallback] (ISC_DataBinding.js:12279:77)
at $wnd.isc.RPCManager.fireReplyCallback (SmartGwtEntryPoint.java:508:1)
at _3.isc_c_RPCManager_fireReplyCallbacks [as fireReplyCallbacks] (ISC_DataBinding.js:12285:120)
at _3.isc_c_RPCManager_completeOperationReply [as completeOperationReply] (ISC_DataBinding.js:12257:6)
at _3.isc_c_RPCManager_performOperationReply [as performOperationReply] (ISC_DataBinding.js:12253:13)
at _3.isc_c_RPCManager__performTransactionReply [as $39d] (ISC_DataBinding.js:12095:26)
at _3.isc_c_Class_fireCallback [as fireCallback] (ISC_Core.js:654:102)
at _3.isc_c_Timer__fireTimeout [as $in] (ISC_Core.js:7399:6)
at ISC_Core.js:7392:40

Tested using 'v14.1p_2026-04-24/Pro Deployment', in the latest version of the Chrome browser.

Test case code:

@Override
    public void onModuleLoad()
    {
        SC.setScreenReaderMode(true);

        DataSource ds = new DataSource();
        ds.setClientOnly(true);
        DataSourceField dsField = new DataSourceField("Field", FieldType.TEXT);
        DataSourceField dsField2 = new DataSourceField("Field2", FieldType.TEXT);
        dsField.setPrimaryKey(true);
        ds.setFields(dsField, dsField2);

        Record record = new Record();
        record.setAttribute("Field", "Value");
        record.setAttribute("Field2", "Value2");
        ds.setCacheData(record);

        ListGrid grid = new ListGrid();
        grid.setDataSource(ds);
        grid.fetchData();

        Scheduler.get().scheduleFixedDelay(() ->
        {
            grid.selectRecord(0);
            grid.focusInRow(0);

            Record updatedRecord = new Record();
            updatedRecord.setAttribute("Field", "Value");
            updatedRecord.setAttribute("Field2", "Value3");

            ds.updateData(updatedRecord);

            return false;
        }, 2000);


        grid.draw();
    }

[Isomorphic]

Thanks for the report - we see the issue and a fix has been applied.

Please retest with a build dated May 1 or later.