Drupal\ui_patterns_views\Plugin\views\row\Pattern::isFieldVisible returns false on valid mappings. This is caused by using different identifiers for mapping and visiblity check.
Problem
ViewsRowSource::getSourceField uses DisplayHandlerBase::getFieldLabels, returning field labels keyes by id
Pattern::isFieldVisible passes FieldPluginBase::field to hasMappingDestination, meaning field name
These values are usually the same in views, but don't have to be. This can cause fields to not be passed to patterns.
How to reproduce
We had this bug with the field "Published on" provided by drupal/publication_date.
Install ui_patterns_view and publication_date
Create a view, inserting the field "Published on" twice or more.
Check the view config: It will show different values for id and field on all but the first field plugin
Drupal\ui_patterns_views\Plugin\views\row\Pattern::isFieldVisible returns false on valid mappings. This is caused by using different identifiers for mapping and visiblity check.
Problem
These values are usually the same in views, but don't have to be. This can cause fields to not be passed to patterns.
How to reproduce
We had this bug with the field "Published on" provided by drupal/publication_date.
Sample from a view config
fields: published_at: id: published_at table: node_field_data field: published_at published_at_1: id: published_at_1 table: node_field_data field: published_at published_at_2: id: published_at_2 table: node_field_data field: published_at
Solution
Pass field id to isFieldVisible along with field. See changes in the PR.