My last update for tonight π
I have confirmed the values are being posted correctly, however when I do an SQL query log in WordPress, their is no value pair for text field.
I have just tested the site in php 7.0 and it’s working! There is obviously something going on with PHP/Suhosin/Wordfence/mod_security that is causing the issue but it’s tricky to narrow down.
I hope my posts helps someone and can save them from hours of frustration!