Hello Again,
I can help out here.
The list view single event template uses <?php the_excerpt() ?> to display the text which, removes all the formatting.
You could change that function to something else to display the content with markup.
We do not have any coding to do that, but a Google Search would find a solution for that.
The file you want to move and edit follow our themer’s guide is this one:
the-events-calendar\src\views\list\single-event.php
Let me know if you have any follow up questions.
Thanksthemer’s guide