Since the update I've noticed that the managed metadata service is not working correctly anymore. The Term Store can be accessed via central admin, but not from site settings.
I've reset IIS, and set read permissions for the app pool service account (althought this was not set before, no issues had occurred). Still have not been able to access term store.
Update:
Error encountered in background cache check System.Security.SecurityException: Requested registry access is not allowed.