‘@’ sign getting removed

I’m not certain this is plugin related, but it was suggested I post this here.

In the plugin there is a report option to report forum posts.

I have traced the code to right before the apply_filters() function call, and immediately after the function call, the ‘@’ sign has been removed the admin email address.

For some reason the apply_filters is removing the ‘@’ symbol on my system and on two other sites (a staging site on my host, and my local development machine.

However, this is not occurring on the plugin authors sites or test servers.

I’m trying to figure out what is causing this behavior.

Thanks for any help.