I ended up rebuilding in elementor. This theme gave me too many headaches
There is no option for Project Cover Image (see screenshot)
I can see that there are 3 validation errors for AMP through (raised separate ticket for this here) which might be related.
I also tried downgrading to WP 6.2.2 (via plugin not as fresh install) but the issue didn’t get fixed by this.
UPDATE: This seems to be a WordPress issue not related to the theme. This seems to fix it: