A few days ago, I mentioned Chrome 43 which breaks a couple of
things in Sencha Touch 2.4. Unfortunately also Ext JS 4 developers,
experienced some problems. Google Chrome version 43 breaks the
Ext.menu.Menu submenus, when hovering over the items.
Currently our engineers are working on a solution. As soon as it’s
fixed, you will be able to download a nightly build, which you can
download from our support portal.
For now, please use this override as a fix:
Put this file in the app/utils/ folder. (and give it the name: “MenuOverride.js“). It should fix the problem..