WordPress user and error pages are in Dutch

[lnicola]

The site is set to display in English, but for some reason user profile pages are titled "Name, auteur op OSGeo", which is probably Dutch, e.g. ​https://www.osgeo.org/member/sandro-santilli/. Error pages also have Dutch titles: ​https://www.osgeo.org/member/strk/ ("Pagina niet gevonden").

[strk]

The reported problem occurs in anonymous windows as well, so it's not related to user settings.

[cvvergara]

curl -s 'https://www.osgeo.org/members/strk' -H 'Accept-Language: en,ro;q=0.5' | rg -F '<title>'
  <title>Pagina niet gevonden - OSGeo</title>
curl -s 'https://www.osgeo.org/members/strk' | rg -F '<title>'
  <title>Pagina niet gevonden - OSGeo</title>

[cvvergara]

Tried several approaches:

• Using the Say what plugin, Defined: "Page not found" to use the sentence "Page not found"
• Editing the .po files where "Page not found" is translated to "Pagina niet gevonden"
  • Pagina niet gevonden-> Page not found
• Manually modifying the core function ​wp_title so that it does not get translated
  • $title = __( 'Page not found' ); -> $title = 'Page not found';

Nothing seemed to work. Some upgrades are pending on plugins and on core, will try again after the upgrades.

Investigating, found this ​comment and the ​Page not found in this case says Untitled

TODO: need to see where in roots the page title is handled.