I am facing if not the same issue a similar issue.The VF page spins on initial reload and upon refresh.  I keep getting an annoying firefox message stating the "page need to resend data".


My code below, super simple for POC, need to put more complex filtering:

<apex:page standardController="Account" extensions="AnalyticsController">
     <analytics:reportChart reportId="00OG0000006hOxY" size="small" filter="{!chartFilter}" cacheResults="true" />
</apex:page>
public with sharing class AnalyticsController{

  
    private final Account acct;
   
    public AnalyticsController(ApexPages.StandardController stdController) {
       
        this.acct = (Account)stdController.getRecord();        
    }


    public String getChartFilter() {
        return JSON.serialize(getSelectedFilters());
    }

    private List<ColumnFilter> getSelectedFilters() {
        List<ColumnFilter> columnFilters = new List<ColumnFilter>();
        columnFilters.add(new ColumnFilter('Account.Id','equals', String.valueof(this.acct.Id)));
      
        return columnFilters;
    }

    public class ColumnFilter {
        public ColumnFilter(String col, String oper, String val) {
            column = col;
            operator = oper;
            value = val;
        }

        // Values needed for apex:analytics component
        public String column { get; set; }
        public String operator { get; set; }
        public String value { get; set; }


    }
}