How to do chained transformations in ImageKit? global modifiers in config prevent raw transformation working correctly.

The relevant part of my nuxt.config.ts:

  image: {
    densities: [1, 2],
    provider: 'imagekit',
    // Options see https://v1.image.nuxtjs.org/get-started/
    imagekit: {
      baseURL: 'https://ik.imagekit.io/aicosmetic',
      modifiers: {
        dpr: 'auto' //<-- Note this line - it'll be important later
      }
    }
  },

In my component, I'm trying to load a watermarked image like so, using the raw parameters as per the documentation

              <nuxt-img
                v-if="preview.image"
                :src="preview.image"
                class="m-auto w-full"
                :modifiers="{
                     raw: "l-image,i-36cc1e3c-cb82-4fa6-8b7b-6b5b39394920@@Ruso1,lfo-bottom_right,w-bw_mul_0.4,l-end"
                  }"
              />

The Problem - however - is that when I load up the resulting URL, I get an "invalid transformation" error. This is because I need to chain the dpr-auto before or after the raw modifier with the layer overlay

This is the generated, broken link (note the comma after the dpr-auto: view image
https://ik.imagekit.io/aicosmetic/166edd60-1ddc-4911-ac0b-2312c8b2a165/1936-preview-818165818247-2024-07-02_01_07_44.727525-0-final_4up-kGp1G?tr=dpr-auto,l-image,i-36cc1e3c-cb82-4fa6-8b7b-6b5b39394920@@Ruso1,lfo-bottom_right,w-bw_mul_0.4,l-end

When updating the URL manually to chain the layer (with a semicolon) instead of the comma, then we get the right image: view image
https://ik.imagekit.io/aicosmetic/166edd60-1ddc-4911-ac0b-2312c8b2a165/1936-preview-818165818247-2024-07-02_01_07_44.727525-0-final_4up-kGp1G?tr=dpr-auto:l-image,i-36cc1e3c-cb82-4fa6-8b7b-6b5b39394920@@Ruso1,lfo-bottom_right,w-bw_mul_0.4,l-end

So, is this a bug or a lack of a feature where config and raw modifiers don't play nice together.
or is it a PEBKAC situation?

Any help is much appreciated, thank you for all your work.

Start with the image configuration in nuxt.config.ts and the component's modifiers object, then trace how the ImageKit provider combines global modifiers with raw parameters. Compare the generated comma-separated URL with the manually corrected semicolon-separated URL. Done means chained transformations work correctly or the limitation and supported usage are documented.