Weeronline.nl partially broken by Cloudfront rule

Using HTTPSE 5.2.11 in Firefox 45ESR, or HTTPSE 2017.3.9 in Iridium 54 (chromium fork), on Debian Jessie. Visiting: http://www.weeronline.nl/Europa/Nederland/Amsterdam/4058223 There are 3 tabs to see the 48h/5d/14d weather forecast, And below that, 2 tabs for 2h/48h rain forecast. When I enable the Cloudfront ruleset, I can't switch those tabs (clicking the tabs does nothing except update the address bar).

I have tried wget'ing all cloudfront assets requested directly by the page (so haven't checked "3rd party" requests), manually over http and https, and get identical files, so that's not the problem. Also tried some mixed-content browser settings without result. Note that not all Weeronline pages use Cloudfront, it seems only required by Dutch places such as the mentioned Amsterdam page.

Thank you