I did not touch any other settings.
Until 10.2 there is no problem at all.
This is a new issue in 10.3 beta.
Many users in Korea as well as me are aware of the 10.3 beta issue.
We have also reported bugs to Apple
i did check it with beta 10.3 and i can confirm the issue with domains from the video.
Does it happen only on Korean sites? Could you give us some more example links, please?