This issue hasn’t been reported for a while so it’s not applicable anymore.
To fix, please edit with Elementor, select Product Grid element and in the Image Size select list, make sure to pick WooCommerce Thumbnails eg: https://d.pr/i/x7GO8j .
This seems to be happening starting with WooCommerce 6.8 version.
It happened because the Image Size list option, had “shop_catalog” as default image size, which was the default standard WooCommerce catalog size for product images, however it seems to have been replaced with “woocommerce_thumbnails”, and because of that, the Image Size list defaulted to the first item in the list (the standard thumbs 150×150).
The issue will get fixed starting with Rey 2.4.0+ .