They detected a problem accessing P4 blogs with some mobile phones (just a few, not most of them). The menu is open by default at the page, cannot be closed and cannot allow the page be viewed correctly.
Reported devices: iPhone 5s, iPhone 7s and some people got it on Android phones.

Example page: https://www.greenpeace.org/brasil/blog/2022-nao-sera-facil-mas-nao-estaremos-sos/