Steps to reproduce it:
- Create a simple portlet (see portlet-example.jar attached).
- Disable GZipFilter in portal-ext.properties: com.liferay.portal.servlet.filters.gzip.GZipFilter=false
- Start the application and deploy the portlet on it.
- Add the previously deployed portlet to the portal.
- Interact with the portlet.
Observed behaviour: the portlet does not work (in the example the message is not showed). Content-length of the response is 0.
Expected behaviour: the portlet works (in this case we can see the message).