Hey Sören,
I’m really sorry about that! Unfortunately this leaves only one alternative method of doing this, which is to make a custom version of the file /wp-content/plugins/the-events-calendar/src/views/modules/meta/venue.php
No, don’t worry about recreating the whole file, you do not have to do that! You can just copy and paste the original file, and then add the duplicate to your theme as described in this article → https://theeventscalendar.com/knowledgebase/themers-guide/
Once you have the file set up in your theme’s new /tribe-events folder, simply take this original line:
<dd class="author fn org"> <?php echo tribe_get_venue() ?> </dd>
And replace it with this:
<dd class="author fn org"> <?php echo wp_strip_all_tags( tribe_get_venue() ); ?> </dd>
I hope that helps!
George