Steps to replicate the issue:

• Create a page with the following Wikitext

<ref name="ldr" group="notes" />

<references group="notes">
<ref name="ldr">Foo</ref>
</references>

• Open VisualEditor

What happens?:

• VisualEditor does not display the ref correctly it just shows the content as missing see

• VisualEditor does not allow users to edit the ref

What should have happened instead?:

• VisualEditor should show the content and allow users to edit

Notes:

Parsoid and the legacy parser render the Wikitext correctly and put the content of the ref into the grouped references section.