Invalid value assignment for blueprint select element

[gbdesign2023]

It was like looking for a needle in a haystack until I found the error 😮‍💨

I have expanded the list blueprint. The selectable value is used for a CSS class. But from number 10 onwards, there is a phenomenon were not the value, but the description is written in the TXT. This also happens with number 99. It also is not significant whether the value is written with or without quotation marks.

I was able to reproduce the error in a fresh starterkit with Kirby 4.4.1.

site/blueprints/blocks/list.yml

name: field.blocks.list.name
icon: list-bullet
wysiwyg: true
preview: list
fields:
  text:
    label: field.blocks.list.name
    type: list

  liststyle:
    type: select
    options:
      "01": "List 01"
      "02": "List 02"
      "03": "List 03"
      "10": "This description should not be here"
      "99": "That is wired"
    default: "01"

For example, if I select “10”, this is the result in the TXT file:

[…]

"blocks":
[
  {
    "content":
    {
        "text":"<ul><li>Test</li></ul>","liststyle":"This description should not be here"
      },
        "id":"40945ac7-b158-462d-baa9-eba3bda84cfe",
        "isHidden":false,
        "type":"list"
  }
]

[…]

But this should be output: "liststyle":"10"