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Foundation @ 6.3.1 fails to successfully process ID attributes containing a full-stop, '.'

Not a githubber thus here is a bug report:

<p class="text-center"><a data-open="modal3.2">Forgot your password?</a></p>

does not trigger the Reveal modal.

<p class="text-center"><a data-open="modal3_2">Forgot your password?</a></p>

this works.

Reveal id attribute

Not a githubber thus here is a bug report:

<p class="text-center"><a data-open="modal3.2">Forgot your password?</a></p>

does not trigger the Reveal modal.

<p class="text-center"><a data-open="modal3_2">Forgot your password?</a></p>

this works.