it's not normal behaviour.
This can be because of errors in functions
as a matter of fact, IT IS A KNOWN PROBLEM, according to this
but that solution did not work for me
Playing around with this problem, it seems to me that, for some reason, in the updateDisplayList phase / method, the data is not synchronized between the "current" checkBox and the data that is suposed to be represented by that checkbox
The first thing that comes to mind is, why do i have to create the checkbox for every row when i only need it for a few of them ?? but in the createChildren phase, the data property is null
how can i access the data in this phase ???