Ext.grid.plugin.BufferedRenderer.scrollTo(): Unknown record passed to BufferedRenderer#scrollTo
Error: Unknown record passed to BufferedRenderer#scrollTo
at new Ext.Error (http://myhost/plugins/extjs6/resources/ext-all-debug.js:2744:21)
at Function.raise (http://myhost/plugins/extjs6/resources/ext-all-debug.js:2803:23)
at Object.Ext.raise (http://myhost/plugins/extjs6/resources/ext-all-debug.js:2882:21)
at constructor.scrollTo (http://myhost/plugins/extjs6/resources/ext-all-debug.js:239319:25)
at constructor.doEnsureVisible (http://myhost/plugins/extjs6/resources/ext-all-debug.js:214268:39)
at constructor.onLastExpanded (http://myhost/plugins/extjs6/resources/ext-all-debug.js:262840:24)
at Object.callback (http://myhost/plugins/extjs6/resources/ext-all-debug.js:9249:39)
at constructor.expander (http://myhost/plugins/extjs6/resources/ext-all-debug.js:262776:28)
at Object.callback (http://myhost/plugins/extjs6/resources/ext-all-debug.js:9249:39)
at constructor.expand (http://myhost/plugins/extjs6/resources/ext-all-debug.js:117822:37)