Wordfence blocking traffic to an add-on domain

Hello,

We host multiple sites on VPS server running cpanel. The primary site (in public_html) is a WordPress site running WordFence. An add-on domain in a nested folder (plublic_html/addon/) is a WordPress site that doesn’t currently have WordFence installed. Yesterday, we upgraded the addon site to the current version of wordpress (from version 4.9.24) and after that some code stopped working. The site uses Divi, and the code inside of “Code” modules started rendering as text. When we tried resaving them, it would give an error. Eventually, I traced the error to a 403 error due to being blocked by WordFence. In order to get around this, I had to go into the firewall settings on the main site and add an exception.

Is this expected behavior? Should a WordFence install on one domain be impacting a separate domain?

 

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