That seemed like a reasonable comment when I read it;
however, I then read jdporter's response:
the "current behavior" is actually only very recent behaviour.
Anyway, as per his subsequent response,
the current behaviour is back to the original behaviour.
The link I put in my private scratchpad ([rt://46333]), to initially check the reported problem,
now resolves to http://rt.cpan.org/Public/Bug/Display.html?id=46333,
so this is again working as documented.
Having said that, there are two documentation issues.
When the change to [rt://] was made ("on 2016-12-21"):