It now only shows the including vat price but I can’t find the function to show the excluding vat price. The recently viewed products block is built with knockout.
vendor/magento/module-catalog/view/base/web/template/product/list/listing.html
vendor/magento/module-catalog/view/base/web/js/product/list/columns/final-price.js
Catalog prices and Display Product Prices In Catalog are set to excluding tax in the backend (all relevant settings are)