Search pages on mobile are having a bug when the user clicks in the "Filter" options button. It opens a modal with all filters and an overlay background on top. This is preventing the user from doing any other action on the website (it's not possible to click/close the window anymore). 

Also reported by Sweden:

Requestor's email: mlavaren@greenpeace.org
Requestor's Skype: mariedelavarene

Page: https://www.greenpeace.org/sweden/?s=hav&orderby=_score

Description of the issue: On mobile, if you click on the filter after doing
a search, the filter is grey and no further action is possible.
I provided a random search page URL but it is the case for all searches
filters on all the Nordics p4 platform.