Hello Frans
I have just observed this happening on my own site and another client’s site as well. I’ve submitted the bug for a fix, and will notify you as soon as that update is available. Until then, you could approach this workaround 2 different ways:
Can you add the following code to your child theme, or in Appearance ยป Customize ยป Additional CSS?
.single-featured-image-header img {display: none !important}
OR
.tribe-events-event-image img {display: none !important}
Sorry for this inconvenience.
Thanks
Courtney ๐