In previous version I called me.getView() in initComponent of a grid an all thing was ok. but at 5.1 version I should do this only AFTER this.callParent() call otherwise I get this error :

Uncaught TypeError: Cannot read property 'scroll' of undefined


you can check this fiddles too :


https://fiddle.sencha.com/#fiddle/fkn : it is in 5.0.1 and it is ok


https://fiddle.sencha.com/#fiddle/fko : the same example but in 5.1 and it raises error


Note that if it is a CHANGE , you should tell about it in Upgrade guide. It makes 80% of my old codes not to work.