Hi! I can't find a setting to select a region for the New Tab page, so I assume this is a bug or feature in development.
Whenever performing a search in the search box on the New Tab page, the results are always returned in US English. This is especially a problem when looking up products to buy (pricing from US suppliers in US currency).
Compounding this, my default country for Bing is then set to United States, so I have to manually switch back to United Kingdom. As this happens each time a search is performed on the New Tab page, I tend to avoid using it completely for the moment!
Hopefully this is in the pipeline to be fixed in a future build. Cheers!
(Currently affecting build 184.108.40.206 - but it did affect previous builds too. Under Settings, only language listed is "English (United Kingdom)" but this seems to have no effect for search issue.)