The community member's post discusses the new Head Slot component, which allows users to either do nothing to get a default canonical on each page, or add a Head Slot to override and customize the canonical. The default canonical references the current path, but by specifying a canonical in the Head Slot, the default canonical will not be displayed on the page.
In the comments, another community member shares that their SEO tool stopped complaining about missing canonicals, and they didn't need to do anything other than republish, expressing their appreciation for the new functionality.
Big props to the team for how you implemented the new Head Slot component. Do nothing to get a default canonical on each page, or add a Head Slot to override and customize: " a default canonical is output on every page and references the current path. By specifying a canonical in Head Slot, the default canonical will not be displayed on the page." (https://docs.webstudio.is/university/core-components/head-slot#key-information)