Autocomplete Error does not appear when user submits no changes to existing phone number

Summary:

We have implemented an autocomplete to require a certain length of numbers in the number field for phone numbers for certain countries.

If the user has an existing phone number that is less than or greater than the condition set in the autocomplete already committed on the record, and selects edit but does not change anything and continues to submit, the autocomplete does not appear/stop the submission.

Is this experience expected in general for this type of autocomplete since the user did not make changes to the prior committed data? Is there a way for the autocomplete to trigger in this scenario?