keikai cannot work with Chrome on iPad

        <spreadsheet id="ss" width="100%" vflex="1"
                     showContextMenu="true" showSheetbar="true" showToolbar="true" showFormulabar="true"
                     showSheetTabContextMenu="true"
                     src="/WEB-INF/books/blank.xlsx"/>

blank.zul:33 Uncaught TypeError: Cannot read properties of undefined (reading 'apply')
    at init.bind (blank.zul:33:77)
    at init.$init (zss.wpd:23498:11)
    at new init (zk.wpd:9734:18)
    at Function._initInnerComp (zss.wpd:41926:22)
    at init.bind_ (zss.wpd:37640:18)
    at init.bind_ (zssex.wpd:4978:27)
    at init.bindChildren_ (zk.wpd:23637:67)
    at init.bind_ (zk.wpd:23597:12)
    at init.$supers (zk.wpd:11639:21)
    at init.bind_ (zk.wpd:39373:12)