Problem with upgrading blueprint from kirby3: image-field to block-> image

Hi there,
I’m trying to update a website from kirby 3 to 4 and ran into a weird situation with a structure-field.
Everytime I try to insert a record in this structure:

  trainer:
    label: Trainer
    type: structure
    style: table
    fields:
      trainerbild:
        label: Trainerbild
        type: blocks
        default: image
        fieldsets:
          - image
      trainername:
        label:  Name
        type:   text
      trainerbeschreibung:
        label:  Graduierung & Co
        type:   textarea

… this is rendered:

The page is in draft mode and has no content so far.

Furthermore: I want to restrict the image input to only one image. How can I achieve that?
It was easy with the former image-field …

Thank you for your help!

That’s not a valid property. does the issue persist if you remove it?

mhm, is it a deprecated property? It’s been in the blueprint for years and seemed to work

But yes, the blueprint works if I remove style: table.

Thank you!

Never before seen this property and don’t think it ever existed, but maybe validation of properties has changed since you added it.