Extjs Grid scroll dons't work after application kept insert and delete record.

[yimingliu]

Hello everyone,

I am developing an application using Extjs 4.0.7.

For reasons, I need to add and delete record to a grid very often(maybe few times per second).Scroll bar for the grid works in the begin, but doesn't work after my application kept adding and delete record to the grid store.

Following is code to add and delete record to grid store

function insertItems(store, records)
{
store.add(records);
if (store.count() > 150) store.removeAt(0);
}
Is that a extjs bug? Do any one have any idea or solution for the problem?

[mitchellsimoens]

The virtual scroller in 4.0.x was plagued with bugs. The scroller was revamped in 4.1.x and fixed nearly all bugs that was caused but the old scroller, we now went back to letting the browser deal with scrolling.

[yimingliu]

Thanks the reply.

I tried to upgrade from 4.0.7 to 4.1.1a.

There was what I didn't.
I replaced 4.0.7 version "ext-all.js" and resources folder to 4.1.1 version in my project.

Some functions didn't work properly.
For example,
Dynamically set button text didn't work.
For tree panel, tree nodes text didn't show up in 4.1.1a and show well in 4.0.7.
Attachment 41223

Did I do upgrade in a wrong way or some code modifications have to been done after upgrade to 4.1.1a?

If code have to modify, do we have guide link?