Scrollers on grids with huge amount of rows

[fuzzz]

REQUIRED INFORMATION
Ext version tested:

• Ext 4.0 rev 7

Browser versions tested against:

• Crome18
• FF3

Description:

• When total amount of rows is bigger than some value vertical scroller became inactive
• Chome18 - if total value equal or more than 6391321
• FF3 - if total value equal or more than 852176

Steps to reproduce the problem:

• Just change total value in example http://dev.sencha.com/deploy/ext-4.0...te-scroll.html

The result that was expected:

• You can scroll down anywhere you want

The result that occurs instead:

• Vertical scroller will inactive

Test Case:

• Just change total value to 6391321 in example http://dev.sencha.com/deploy/ext-4.0...te-scroll.html

HELPFUL INFORMATION
Possible fix:

• not provided

Additional CSS used:

• only default ext-all.css

Operating System:

• Win7 Business

[mitchellsimoens]

The scroller in 4.1.0 beta 3 has been redone. Please check this with 4.1.0 beta 3.

[fuzzz]

But in 4.1.0-beta-3 Infinite grid example don't work
My app is also not working with this beta.

[fuzzz]

but when i add any big value to 'totalCount' directly to store object, it is working.
In 4.1.0-beta-3 with big value of total rows scrollers not become inactive but it works not right. When total is bigger than 6391321 in chrome scrollers is working for total=pageSize. After scrolling to end it load next page but after 3 page loading on 4th load mask do not disappeared, but json request is ok.