DHTLMX 2.5 - dhtmlxGrid does not work with firefox 21

Suite and Optimus Suite 5
#1

We use DHTMLX 2.5. We use dhtmlxgrid for displaying table data. Until firefox 20, it works fine.
When using firefox 21, dhtmlxgrids are not displayed in the GUI. Same issue was noticed in Chrome too. What could be the issue?

#2

This issue seems related to viewtopic.php?f=2&t=30157&start=10.

We use licensed DHTMLX2.5

How can we get the fixed version?

#3

Please, try to update the version of your dhtmlxGrid.