flexmonster crash my webpage

Hello, Oleg, 
 
Thank you for reaching out to us. 
 
For us to investigate this further, could you please describe your case in a bit more detail and provide us with:

1. Your Flexmonster report configuration together with a dummy data set with which such behavior is reproducible.
2. It would also be helpful for our research to receive the code example where the issue is reproducible.
   For example, you could modify the following JSFiddle so that the issue is reproducible: https://jsfiddle.net/flexmonster/9o4byp5w/.

More insight will help our team understand the situation better and make further progress in solving this case.
 
Thank you in advance, and looking forward to hearing from you soon.
 
Kind regards, 
Vera