MarkDown - Heading formatted text not displaying properly

Heading Text not displaying as expected.

I have noticed that posts with H2 heading titles, created and displayed perfectly on a Glitch-Social instance, display without the Larger text expected for the title in Pleroma FE.

While it's possible that this is intentional, a fellow user suggested an issue be raised here, for discussion and in case this is not intended behaviour.

Example post : Marilyn. Always remembered.

Which display so in Pinafore client (logged at the source, a Glitch-Social instance, here using the Dark Greyscale theme) :

The same post as seen at my account at F.A.B., via web browser, Pleroma FE :

And also at F.A.B, but using the MastodonFE -- same problems :

Observed Problems :

• Heading2 title displayed as plain text; no size or Bolding enhancements.
• Blank line between Title and first line of post text is suppressed in Pleroma front ends as well.

Post as seen elsewhere :

It displays very well in Friendica.

Thank you for your attention and consideration.