How to eliminate the “thank you for sharing” Facebook popup

To clarify for those passing by: there’s no additional popup; when the Facebook share dialog is opened in a popup, the post-share redirect occurs in the same popup window. There’s no popup when sharing in a tab, for instance.

Using AddToAny Templates, you can change the value of Facebook’s redirect_uri to empty to have Facebook show a blank page instead and try close the popup when the browser permits.

Just add the following code to your “Additional JavaScript” box in Settings > AddToAny:

a2a_config.templates.facebook = {
    redirect_uri: ""
};

Important to note: the separate “Facebook Messenger” service requires a valid, non-empty redirect_uri.

That works great, thanks!