Mail.mail.domain.tld double mail MX bug? Fix?

Creating website create 2 MX records for mail.domain and mail.mail.domain I found bug here reported MX mail.mail.domain.tld - CyberPanel Project / Bug Report - CyberPanel Community

How to fix this? Imgur: MX record

Shoud I delete double mail.mail MX record?

Thx

Dear yes two records created for MX the main one and then the mail domain but it only happen when you add the mail domain after adding the main domain but I will check with devs about this