When I middle-click the ABP icon in the address bar, I get the option to Enable for the current site, which turns the icon green.
The reverse doesn't seem to work properly. Sometimes I can m-click again, and the Enabled is still checked, even with a green icon.
Other times, it will be unchecked but still green and not filtering.
In other words, I can only turn ABP off for a site, but I can't turn it back on using the same method. In order to remove a site, I instead have to go to the Whitelist Options.
Thanks and cheers,