Generate adds double slashes when using build.publicPath with domain

Hello,

We are using the Images module to convert static images to Webp format.
We want to serve static files from other domain, so as I understand that we need to change build.publicPath to serve all static files from other domain.

Here are our settings:

// packages.json

"dependencies": {
  "@nuxtjs/i18n": "^7.2.0",
  "@nuxtjs/sentry": "^5.1.6",
  "core-js": "^3.17.1",
  "nuxt": "^2.15.8"
},
"devDependencies": {
  "@mdi/js": "^6.4.95",
  "@nuxt/image": "^0.6.0",
  "@nuxt/types": "^2.15.8",
  "@nuxtjs/pwa": "^3.3.5",
  "@nuxtjs/vuetify": "^1.12.1",
  "@vue/test-utils": "^1.2.1",
  "babel-core": "7.0.0-bridge.0",
  "babel-jest": "^27.0.5",
  "jest": "^27.0.5",
  "nuxt-purgecss": "^1.0.0",
  "vue-jest": "^3.0.4",
  "webpack": "^4.46.0"
}

// nuxt.config.js

ssr: true,

target: 'static',

. . .

buildModules: [
  '@nuxt/image',
],

. . .

image: {
  dir: 'assets/images'
},

. . .

build: {
  extractCSS: {
    ignoreOrder: true
  },
  publicPath: process.env.NODE_ENV === 'production' ? 'https://static.domain.com/_nuxt/' : '/_nuxt/'
}

Unfortunately, after the generate, I see a tag like this.

<img src="https://static.domain.com/_nuxt//image/4bf726.webp" width="187" height="80" loading="eager" sizes="600px" srcset="https://static.domain.com/_nuxt//image/4bf726.webp 600w" data-v-8380cc7e>

I'm pretty sure those double slashes (_nuxt//image) should not be there.

Without a domain (publicPath: '/some/random/path/'), there are no double slashes added and everything is correct.

Reproduce the generated output using the issue's nuxt.config.js settings, especially @nuxt/image and build.publicPath. Trace how the generated image URL combines https://static.domain.com/_nuxt/ with /image/4bf726.webp, then verify the result no longer contains _nuxt//image while still using the configured domain and path.