Hello,

I am using ExtJS in version 4.2. I built a grid with CellEditor elements for edit matter. There are no issues in Chrome and Firefox, but on IE11 and Microsoft Edge I have an error:
Code:
SCRIPT5007: Unable to get property 'setSize' of undefined or null reference
This exception is thrown from internal
calculate
function on line
ownerContext.childItems[0].setSize(fieldWidth, fieldHeight);
2019-11-19_09h20_07.png

My function looks like that:
Code:
        getCellEditor: function (alias) {
            var me = this;
            me.fieldsInEditMode[alias] = true;
            let field = new Ext.form.TextField({ selectOnFocus: true });

            const editor = new Ext.grid.CellEditor({
                field: field,
                defaults: {
                    zIndex: 14000
                }
            });

            field.editor = editor;
            return editor;
        }
Am I missing some property?