Test case:
Lorem ipsum<ref name="expl_A" group="n" />
similique sunt in culpa<ref
name="expl_B" group="n" />
cognito ergo poof.{{#tag:ref|AAAAA
|group="n"|name="expl_A"}}
===Explanatory notes section===
<references group="n">
{{#tag:ref|Link to expl. A.<ref
name="expl_A" group="n" />
|name="expl_B" |group="n"}}
</references>Result: The note expl_A disappears. Instead, a spurious "error" message is emitted in its place. Invalid <ref> tag; no text was provided for refs named expl_A