After update to v79.1.1.23 ""appears in uMatrix column XHR (for all sites)

And now in order to login to AOL webmail must allow in column XHR.

In addition, all sites, as well, now show in uMatrix column XHR.

255.255. 255.255 is a special broadcast address, which means “this network”: it lets you send a broadcast packet to the network you’re connected to, without actually caring about its address; in this, is similar to 127.0. 0.1, which is a virtual address meaning “local host”.

MacOS 10.13.6 High Sierra


Would like to understand what this means, and why this behavior has begun only after the update to the What does this mean for Brave???

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