‘Limit Tag’ not working

I am using latest version of AnsPress for implementing a Q&A forum on my portal on WordPress 4.7.4. There’s an option in the settings section of AnsPress to limit ‘number of tags’ for questions asked on AnsPress.  But the same is not working for me. Could anyone please help me on this?

Please find attached screen grabs for reference.

You can observe that even though the no of tags has been limited to ‘7’, user can still enter more than 7 tags.