Thank you for getting in touch, we do appreciate your time on this one.
@Alsvik, I had a look at your map and it appears it has a map height of 100% which I believe is the cause of the issue. Could I ask you to edit your map and set it to a fixed amount such as 400px to confirm if this resolves the issue?
A value of 100% would require a container with a fixed/dynamic height added to the page. The map will then inherit its height from the container it is placed within.
@rotherym, could I ask that you check the information above to determine if this applies to your site as well?
If it does not, could I ask you to share a link to your map with me so that I may run a few tests from my side?
Thank you both for your time and patient while we debug this issue and resolve it as soon as possible for both of you.