Forum Discussion
Autofill: add specificity by port, not just domain(!)
By doing a quick search of the forum, I see that a few others have requested this feature (including me 😉).
January 2015
https://1password.community/discussion/35577/respect-port-numbers-in-url-matching
October 2021
https://1password.community/discussion/124130/1password-not-respecting-ports-on-urls?utm_source=community-search&utm_medium=organic-search&utm_term=port
April 2022
https://1password.community/discussion/129087/consider-tcp-port-number-when-presenting-suggested-vault-entries#latest
February 2023
https://1password.community/discussion/138348/custom-autofill-behaviour-for-different-ports?utm_source=community-search&utm_medium=organic-search&utm_term=ports
Looks like Bitwarden provides this feature: https://bitwarden.com/help/uri-match-detection/