I have pretty simple code which was working on an older sandbox, when i migrate to a new one, nothing happens when i click on other tabs.

<apex:page standardcontroller="Opportunity" extensions="ExtendedSalesProcess">

 <style>
      .activeTab {background-color: #236FBD; color:white; 
         background-image:none}
      .inactiveTab { background-color: lightgrey; color:black; 
         background-image:none}
   </style>
   <apex:tabPanel switchType="set" selectedTab="tabdetails" 
                  id="AccountTabPanel" tabClass="activeTab" 
                  inactiveTabClass="inactiveTab">   
      
      <apex:tab label="Solution Mapping" name="AccDetails1" id="tabdetails1">
      <apex:include pageName="OpportunityDealSummary"/>
      </apex:tab>
      <apex:tab label="Tech Plan" name="AccDetails2" id="tabdetails2">
      <apex:include pageName="OpportunitySE"/>
      </apex:tab>
       <apex:tab label="Lead" name="LeadDetails3" id="tabdetails3">
       <apex:include pageName="OpportunityLead" rendered="true"/> 
       </apex:tab>
      <apex:tab label="Competitor Intelligence" name="AccDetails4" id="tabdetails4">
      <apex:include pageName="OpportunityCompetitor"/>
      </apex:tab>

      <apex:tab label="Notes and Attachments" 
                name="NotesAndAttachments" id="tabNoteAtt">
         <apex:relatedList subject="{!opportunity}" 
                           list="CombinedAttachments" />
      </apex:tab>
     
       </apex:tabPanel>
</apex:page>