After installing the brand new 6.4.3 release I'm not able to edit component properties of a field, the sidebar is empty. Do you have the same problems?
It is a known issue with service pack 3. Please, see the other thread related to this issue. AEM 6.4.3 | Not able to edit any component
No browser alerts
13:47:14,491 ERROR [stderr] (FelixDispatchQueue) RAWProcessor succesfully installed
13:51:34,899 ERROR [stderr] (default task-221) System property [org.owasp.esapi.opsteam] is not set
Do you see any error in error logs or in browser debugger? What's the forms package version you have installed?