Adaptive builder with static field

Not sure if it’s possible and I’m missing something really simple, or if it’s a bug.

I’d like to show a static field in a backend form, with the a repeater with groups in builderMode’s fields below it…

I have this field…

But when I add a block the fields are rendered above my media finder field…

Here’s my yaml for this tailor model

fields:

  image:
    type: mediafinder
    label: Main Image
    mode: image
    maxItems: 1

  content:
    type: repeater
    displayMode: builder
    span: adaptive
    prompt: Add a Block
    groups:

        image:
          name: Big image
          icon: ph ph-image
          fields:
            image:
              type: mixin
              source: Builder\Image

        editor:
          name: Editor Content
          icon: ph ph-article
          fields:
            editor:
              type: mixin
              source: Builder\Editor

  seo_fields:
    name: SEO Fields
    type: mixin
    source: Page\SEOFields

Hey @neil-impelling

Try removing the span: adaptive part since it only supports one field per tab.