好吧，这个有点棘手。事实证明，对于一个锁定的网格，Ext.grid.filters.Filters:onMenuCreate会被点击两次......分别对应于显示的网格菜单的两侧。问题是，在onMenuCreat e中，框架没有考虑这两个菜单。它只关心最后创建的菜单，并破坏前一个菜单的侦听器。在onMenuBeforeShow中，这个框架确实考虑了网格的每一边，所以我将这个想法扩展到一个覆盖中。我鼓励你为此创建一个 Sencha 支持票证，如果你没有访问权限，请告诉我，这样我就可以提交一个。

Ext.override(Ext.grid.filters.Filters, {
    onMenuCreate: function (headerCt, menu) {
        var me = this;

        // TODO: OLD BAD CODE... this would destroy the first menu's listeners
        // if (me.headerMenuListeners) {
        //     Ext.destroy(me.headerMenuListeners);
        //     me.headerMenuListeners = null;
        // }

        // me.headerMenuListeners = menu.on({
        //     beforeshow: me.onMenuBeforeShow,
        //     destroyable: true,
        //     scope: me
        // });

        // Just like in the onMenuBeforeShow, we need to create a hash of our menus
        // and their listeners... if we don't, we remove the 1st menu's listeners
        // when the 2nd menu is created
        if (!me.headerMenuListeners) {
            me.headerMenuListeners = {};
        }

        var parentTableId = headerCt.ownerCt.id;
        var menuListener = me.headerMenuListeners[parentTableId];
        if (menuListener) {
            Ext.destroy(menuListener);
            me.headerMenuListeners[parentTableId] = null;
        }

        me.headerMenuListeners[parentTableId] = menu.on({
            beforeshow: me.onMenuBeforeShow,
            destroyable: true,
            scope: me
        });
    },

    destroy: function () {
        var me = this,
            filterMenuItem = me.filterMenuItem,
            item;

        // TODO: ADDING THIS AND REMOVING FROM THE Ext.destroy on the next line
        var headerMenuListeners = this.headerMenuListeners;
        Ext.destroy(me.headerCtListeners, me.gridListeners);

        me.bindStore(null);
        me.sep = Ext.destroy(me.sep);

        for (item in filterMenuItem) {
            filterMenuItem[item].destroy();
        }

        // TODO: ADDING THIS AND REMOVING FROM THE Ext.destroy on the next line
        for (item in headerMenuListeners) {
            headerMenuListeners[item].destroy();
        }

        this.callParent();
    }
});