Iframe not loading when shield is up

[amel]

Description of the issue
Iframe is not loading when shield is up. Is this expected behavior? If that is the case is there a way to find out that user is running brave, so we can inform him to disable shield on our website?

To reproduce this please have metamask address and logged into metamask account.

Looks like shiled is blocking mailchimp.

Exact URL of the website in question
https://casinofair.com

Did the issue present with default Shields settings? [Default states are: Block: Ads/Trackers, 3rd Party Cookies, 3rd Party Fingerprinting Allow: Encrypt Connections enabled (HTTPS), Scripts] (yes/no)

yes

Does the site function as expected when Shields are turned off? (yes/no)
yes

Is there a specific Shields configuration that causes the site to break? If so, tell us that configuration. (yes/no)
no

Does the site function as expected when using Chrome? (yes/no)
yes

What Brave version/Build are you using when you encounter the issue?(About Brave info)
Version 0.56.15 Chromium: 70.0.3538.110 (Official Build) (64-bit)

[kbounds56]

I have Ver56.15 set to default setting and have no problems opening the site. I would check for Metamask issues.

This site has a great search option that covers a lot of issues. Hope this helps.