1.3.2 breaks sending emails to multiple recipients

Just wanted to let you know that your latest update (1.3.2) breaks sending admin notification emails to multiple senders via plugins like Memberpress (they allow a comma-separated list of email recipients for transactional emails). Only one single email address receives admin emails when 1.3.2 is installed and downgrading to 1.3.1.2 fixes this issue. Might be worth adding to your list of bugs for the next release.