GreyM1P - I just posted a feature request that phone fields get autoformatted in a user's preference for more readable formats, e.g. +1 (555) 555-5555. I can verify that when these delimiters are included in a phone field, the field can't execute a call via the dropdown menu (on my iPhone). Thought if the delimited content is copied, the content can be pasted in to make a call.
The Contacts app under Mac OS or iOS does this automatic formatting and can handle the formatted numbers to make calls.
It would be far more elegant if 1Password could do the same.