As explained on https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/delegation-pattern-for-sling-models-doesn-t-populate-all-the/m-p/435498 with delegate you have to either override it in your class and uses method call to super class in your override methods or get the instanc...

Oh ok got it. Please check below link it will help you in tracing the issue https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/delegation-pattern-for-sling-models-doesn-t-populate-all-the/m-p/435498

Can you check inside /apps folder this component cq/experience-fragments/editor/components/experiencefragment has any html or jsp file? It might be possible that this HTML or jsp file is getting called instead of your custom component HTML 

Can you check if inside apps folder for below path cq/experience-fragments/editor/components/experiencefragment has the html or jsp file? It might be possible that this html or jsp file version getting called instead of your custom component html or jsp file 

Log suggest that this file has a problem. content/kpmg/us/en/wireframe-designs/chitvan-wireframing-space/strategic-workforce-planning-in-the-age-of-genai/jcr:content/image/file From log  org.apache.jackrabbit.oak.api.CommitFailedException: OakConstraint0026: /content/kpmg/us/en/wireframe-designs/chi...

best solution is to write an optimize query with proper indexing as suggested by others but iof its one time and you can't create a proper indexing you can try increasing the querylimit as well as explained on https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/what-is-maximum-...

Can you try to debug your code by putting either debugger or putting console.log to check if your Java script is getting executed as per expectation and the variables are having the expected values to do the hide and show?

I believe only admins can modify the metadata schema. There is no harm in testing with updating the user create, modify and delete permission to /conf/global/settings/dam/adminui-extension/metadataschema/

Yes, I believe so.

Aem content copy tool: https://experienceleague.adobe.com/en/docs/experience-manager-cloud-service/content/implementing/developer-tools/content-copy If the associated metadata of assets are attached with the assets then it will be copied as well and if that’s not the case then you can use metadata e...