Web page doesn't load in Facebook browser on Android after being shared

When I share the following page to facebook:

https://ls-info.com/res/3895/10493

It won't load in the FB app browser. This happens only on Android. I tried copying the code to a different domain, using the same html and iframe:

http://nyxstudio.eu/test

This time it loads properly, although the html contents are the same.

I am having a hard time debugging this.. any ideas?