Nobody else has got these problems? Please let my try to specify:

It is not possible to mark text (three, ten, or any amount of words, holding the left mouse pressed) in these links:
https://www.amiga-news.de/en/news/AN-2024-01-00003-EN.html
https://grindercowboy.itch.io/adventure-1
https://aminet.net/package/game/role/adms1_1

But it is possible here:
https://andyvaisey.itch.io/spheroid

Can anybody confirm this?
And if so, what is the difference?