We use aemsync. It's not a plugin, but you can just start it in Intellij terminal.Works like a charm.https://www.npmjs.com/package/aemsynchttps://www.aemquickstart.in/2018/04/aemsync-tool.html 

If you are not AMS Customer you can copy content with CRX2Oak tool:https://experienceleague.adobe.com/docs/experience-manager-65/deploying/upgrading/using-crx2oak.html?lang=en#introduction 

Your current WCM Mode doesn't depend on the presence of "/editor.html". It depends on "wcmmode=disabled" parameter.For example, even http://localhost:4502/editor.html/content/abc/xyz/test.html?wcmmode=disabled will evaluate "wcmmode.edit" to false. currentPage.path will not contain "/editor.html". I...

Apache mod_headers module [1] allows you to control request/response headers, I would check that.[1] https://httpd.apache.org/docs/current/mod/mod_headers.html 

granite/ui/components/foundation/form/fileuploadThis is legacy Coral2 FileUpload [1], better not to use it.Try Coral3 FilleUpload [2], does the issue persists?granite/ui/components/coral/foundation/form/fileupload[1] https://helpx.adobe.com/experience-manager/6-3/sites/developing/using/reference-mat...

Can you paste here how the File Upload is defined in the dialog?And what AEM version you use.

This can be fixed by implementing a custom page. You can inherit from the OOTB page (use sling:resourceSuperType property) and redefine the markup according to your needs.This tutorial walks you through extending a core component, for Page the process similar since Page is also a component in AEM:ht...

<div class="customDropdown"> is generated by Dropdown component, not the parent parsys.Check if you can modify dropdown component markup.

was crx-quickstart folder copied from Windows? if so, you can try to recreate the instance. delete the crx-quickstart and run 'java -jar aem-author-p4502.jar' again.Also, I wouldn't use -XX:MaxPermSize param, since permgen space is gone with java 8.

Did you update cq:designPath property on your pages?It should point to your real design location, e.g. /apps/settings/wcm/designs/default.