mod_filter is wtf broken

[cr0wly]

I have a problem.

I have mod_filter set up to alter the HTML of pages fetched by mod_proxy.

The proxy and filter both work as expected when connecting through IE, but the filter doesn't do a damn thing when connecting through Firefox. You just see the normal page as fetched by the proxy.

Since the proxy and filter are both apache modules, I don't understand how using one browser over another can change the behavior, but it does. WTF!? Btw the filter I'm using is mod_line_edit.