Basic doens't handle labels correctly. Inline labels are put above.
It looks like the field.html.twig needs som work still:
1. This comment refers to something that can be uncommented, but there is nothing to uncomment:
{# BEM inspired class syntax: https://en.bem.info/
Enable this code if you would like field classes like "article__tags", where article is the content type and field_tags is the field name.
#}
{% set classes = classes|merge([
bundle ~ '__' ~ field_name|replace({'field_' : ''})|clean_class
]) %}
2. The following comment referes to an issue that now has been resolved:
{#
Ensures that the visually hidden option for field labels works correctly.
@todo: Remove when https://www.drupal.org/node/2779919 is resolved.
#}
{% set title_attributes = title_attributes.addClass(label_display == 'visually_hidden' ? 'visually-hidden') %}
3. I added this code to get the classes needed to differentiate between inline labels and above labels, inserted at line 5:
{%
set classes = [
'field',
'field-type-' ~ field_type|clean_class,
'field-label-' ~ label_display,
]
%}
But I assume there is a better ways to do it.
Thanks