pfSense

I have a simple setup with WAN and LAN interfaces. I'm trying to add a firewall rule under the LAN interface that marks packets coming from a device on my network.

When I edit the rule, I click on the "Advanced" button and fill the field identified by: "You can mark a packet matching this rule and use this mark to match on other NAT/filter rules. It is called Policy filtering".

I save and when I edit again the rule, the field is still empty (and the marking doesn't seem to occur).

I'm using the following version of pfSense:
2.0-BETA4
built on Tue Aug 10 01:58:13 EDT 2010

NOTES:
- Same problem on the WAN interface.
- No problems with floating rules: Marks are correctly saved.
- When adding the mark manually in the configuration file, everything works as expected.