Bumping this as I am experiencing the exact same issue with the exact same behavior. I have even tried putting a transparent bypass for 127.0.0.1 as the source and destination, the hostname of the firewall, and the firewall's own public address as a source with no success.

@JonathanLee said in Squid 6.6 DEV 24 Issues:

@stephenw10

A lot of my images for posts got deleted as of today is something else going on with the website?

The images are back now...