I believe it to be a bug too. I can get around 63 rules in the firewall before it will get weird and act up, and around 73 QoS rules. My solution was to remember the # of the rule you want to delete, delete it from the web gui, don’t save yet, ssh into the box, delete the rule #, the save the web gui.
I’d really like to have more than 60-some rules, but it is such a hassle to have to clean up the webgui each time an addition/deleteion is made.
I’ve seen this in beta 12 and 13 so far, for both the firewall and QoS sections.
I’ve tried looking for the scripts that are executed to reinstate the rules, but couldn’t find them. Does anyone know, or could help please?