Steps to reproduce:
Create an ACL through REST following the example given on http://docs.geoserver.org/stable/en/user/rest/examples/curl.html#working-with-access-control-rules. Rule appears to be successfully created.
Navigate to "Data" in the administration console to view access rules.
Search for an existing rule.
Administration console fails with a Timeout error for no good reason, regardless of what I search for. Log file doesn't seem to contain anything useful.
To be able to search for a rule again, I need to restart the server.
Windows Server 2012 x64, 2.8.1 installed with Windows installer version