I am using tree in treepanel and treestore to show hierarchical records on UI for one of my application. When I add some no of records vertical scroll bar is appear. I am still adding records. When I do scroll bar up and down some records are invisible and process of hiding records is continue when I am scrolling up and down. When I do check or uncheck any one of record which is visible now, tree is refresh and I am getting all records back. Which component is responsible for this? How can I solve this problem ?
I was having the same issue with a grid and solved it by declaring:
bufferedRenderer: false
I.e.:
Ext.define('YourTree', {
extend: 'Ext.tree.Panel',
store: store,
//other properties
bufferedRenderer: false
});