leobsf

It might be a conflict with another plugin. But not sure which one.

The preview inside the block editor is correct but when i am in the preview, the default value is used instead of what i entered

Sure , it is super simple:

[
    {
        "id": 1173,
        "title": "ScastieEmbed",
        "icon": "<svg width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n<rect opacity=\"0.25\" width=\"15\" height=\"15\" rx=\"4\" transform=\"matrix(-1 0 0 1 22 7)\" fill=\"currentColor\" \/>\n<rect width=\"15\" height=\"15\" rx=\"4\" transform=\"matrix(-1 0 0 1 17 2)\" fill=\"currentColor\" \/>\n<\/svg>\n",
        "keywords": [
            "scastie"
        ],
        "slug": "lazyblock\/scastie-embed",
        "description": "Scastie block",
        "category": "widgets",
        "category_label": "widgets",
        "supports": {
            "customClassName": true,
            "anchor": false,
            "align": [
                "wide",
                "full"
            ],
            "html": false,
            "multiple": true,
            "inserter": true
        },
        "ghostkit": {
            "supports": {
                "spacings": false,
                "display": false,
                "scrollReveal": false
            }
        },
        "controls": {
            "control_250b7742ac": {
                "type": "text",
                "name": "scastie_id",
                "default": "abc",
                "label": "scastieID",
                "help": "scastie ID from https:\/\/scastie.scala-lang.org\/",
                "child_of": "",
                "placement": "inspector",
                "width": "100",
                "hide_if_not_selected": "true",
                "save_in_meta": "true",
                "save_in_meta_name": "scastie_id",
                "required": "true",
                "placeholder": "Scastie ID",
                "characters_limit": "22"
            }
        },
        "code": {
            "editor_html": "<p>Give it a try: {{scastieid}}<\/p>\n<script src=\"https:\/\/scastie.scala-lang.org\/{{scastieid}}.js\"><\/script>\n<p>Or directly on <a href=\"https:\/\/scastie.scala-lang.org\/{{scastieid}}\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\" (opens in a new tab)\">Scastie<\/a>.<\/p>",
            "editor_callback": "",
            "editor_css": "",
            "frontend_html": "<p>Give it a try:<\/p>\n<script src=\"https:\/\/scastie.scala-lang.org\/<code>scastie_id</code>.js\"><\/script>\n<p>Or directly on <a href=\"https:\/\/scastie.scala-lang.org\/<code>scastie_id</code>\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\" (opens in a new tab)\">Scastie (<code>scastie_id</code>)<\/a>.<\/p>",
            "frontend_callback": "",
            "frontend_css": "",
            "show_preview": "always",
            "single_output": true,
            "use_php": false
        },
        "condition": []
    }
]