Contact form 7 & Flamingo spinning wheel

Hello,

I help one of our clients and we noticed the following bug.

The contact form gets stuck in the spinning wheel, but the emails are sent, as long as the Flamingo plugin is activated. Once I deactivated it, then the form works great.

I did a thorough troubleshooting by disabling all the plugins and enabling them one by one, also by using 2022 theme. Once I reached Flamingo then the issue appeared.

Is there a conflict between these two, or is there some fix that we can do?

Thank you in advance.