Canonical link is relative

[HZooly]

Hey, I'm using i18n module for my Nuxt 2 application (SSR).
My configuration is

{
  strategy: 'prefix_except_default',
  locales,
  seo: true,
  differentDomains: true
}

Sometimes, generated canonical is a relative link <link data-n-head="ssr" data-hid="i18n-can" rel="canonical" href="/my-path"> instead of absolute one. Isn't this link always supposed to be absolute?
If I access to the compiled source of my website (view-source:https://mywebsite.com/my-path), canonical is absolute. But if I inspect through Element devtool inspector tab, canonical is relative /my-path.