.htaccess doesn't target .cfm requests proxied to Tomcat

For those who stumble across this in the future. It seems like directives in the Apache configuration file httpd.conf are effective in the mod_proxied (Lucee) requests, but those in the .htaccess aren’t!

For example, this code block:

<Location /lucee>
    Require ip 123.123.123.123
</Location>

Is not effective in .htaccess but is effective httpd.conf (/etc/apache2/apache2.conf).

Moreover, with ErrorDocument directives… like this:

ErrorDocument 403 "Get out of here, you asshole!"

They are not effective in .htaccess or httpd.conf configuration structures without an additional directive (in httpd.conf):

<IfModule mod_proxy.c>
ProxyErrorOverride On
</IfModule>

This tells Apache to honour its own Error handling philosophy and will thus respect the ErrorDocument rules. [Source]

The above applies to this config:
Lucee 5.3.7.47 (Oct 29, 2020)
Ubuntu 20 with VirtualMin
Amazon EC2 instance