Website aaremarzili.info is shown blank

Bug Reports
#1

REPRODUCIBILITY: 100%
OS VERSION: 4.5.0.21
HARDWARE: Xperia X, Xperia X10 III
UI LANGUAGE: German
REGRESSION: Yes, seems to work on original Jolla with Software 3.4.0.24

DESCRIPTION:

When I open the website https://aaremarzili.info in the stock browser, the website starts to load (depending on internet speed), and finally turns all white.

PRECONDITIONS:

None

STEPS TO REPRODUCE:

  1. open https://aaremarzili.info in the browser
  2. See how it loads and finally turns all white

EXPECTED RESULT:

Website should load and display properly

ACTUAL RESULT:

Website is all white

MODIFICATIONS:

None, tried on a freshly flashed Xperia X

ADDITIONAL INFORMATION:

None

#2

At least it does work once rotated to landscape mode

#3

Interesting, I never tried this, but it displays properly on my devices in landscape.
Also, If i load the website without internet connection, the data in cache is show properly in any mode, however, the website is useless without actual data from the internet (it displays current swimming conditions).