Currently it is not possible to, for example, link Views group headings, because the required option is not working together with the grouping Element selection.
Create a view, group by a entity title field (node, taxonomy, ...), configure this field to link on its detail page.
Now enable the "Use generated output to group rows"-Option in the Views display settings.
"Use generated output to group rows"-Option need to override the heading element with a DIV, so the grouping field controls the entire markup.
Modules Template:
{% if title and grouping_title_type %}
<{{ grouping_title_type }}{{ grouping_title_attributes }}>{{title}}</{{ grouping_title_type }}>
{% endif %}
Core Template:
{% if title %}
<h3>{{ title }}</h3>
{% endif %}
Closed: works as designed
1.0
Code
The question here is: Whats the different to the core solution? We also print {{ title }}, so this should already work, even if the markup will be weirdly wrapped.
WELL, I basically enabled the link on the wrong views field...