Thank you for contacting us, since I have not yet been able to reproduce the issue so I have contacted the dev.team to investigate issue deeper.

Hi Alessandro,

Please post your php code and send us a link to your page if it's possible (email: support@koolphp.net). Thanks!

Hi Alessandro,

We have just answered your questions via email but there's failed email delivery. Would you please email us how to reach to you.

1/ Anyway, to fix your reloading problem when expanding some rows please open the file pivot/widgets/assets/PivotMatrix.js and replace all (there should be 3 occurences in functions expandCollapseRow, expandCollapseRowBun and expandCollapseColumn)

if (tree.children[j].name === nodes[i]) {

with this:

//use == instead of === because sometimes 
//nodename like '1' is converted to 1, which causes inequality
if (tree.children[j].name == nodes[i]) {

2/ Regarding your second question, to make initial loading of PivotMatrix faster you could set “partialProcessing” = true when setting up pivot process:

->pipe(new Pivot(array(

"column"=>...,
"row"=>"...
"aggregates"=>array(
    ...
),
"partialProcessing" => true

)))

This option will make PivotMatrix only process and show first level headers for both row and column. Each time you expand a header the matrix will process a little more.

Then you could compare differences between this and the default loading. Let us know if you have any question. Thanks!