Guest users see broken layout and login sidebar on shop & product pages

When I’m logged in as admin, all shop, product, and category pages display normally. But when a guest user (not logged in) opens any shop/product/category URL, the layout breaks: there is a large white space under the header and a login sidebar appears on the right with “Sign in / Close / Create an account”, pushing the main content down (as shown in the attached screenshot).

This only happens for guest users (tested in Incognito and on multiple browsers). I’m using Woodmart with WooCommerce. I already checked the Popup Builder and theme settings, but I can’t find this specific login sidebar/popup to disable or change its conditions.

Please advise how to completely disable this login sidebar for guests, or how to remove/adjust the element that is breaking the layout on shop/product/category pages.