Bug: cannot write to read only property crop

[coreyward]

I'm running into an error in the v3 Studio: “TypeError: Cannot assign to read only property 'crop' of object '#'”. I have a fairly simple demo schema with an image with a hotspot and this happens when clicking in to edit the image (in the PT editor) after setting the hotspot.

Here's my schema (using sanity-pills):

import { defineField, defineType } from "sanity";
import { createImageField, createSlugField, defaultBlockValidator, fields } from "sanity-pills";

export const schemaTypes = [
  defineType({
    title: "Post",
    name: "post",
    type: "document",
    fields: fields({
      title: {
        required: true,
      },

      // todo: get generate slug button working
      slug: createSlugField({ prefix: "posts", source: "title" }),

      content: {
        type: "array",
        of: [{ type: "block" }, { type: "inlinePhoto" }],
        validation: defaultBlockValidator.all,
      },
    }).map(defineField),
  }),

  defineType({
    title: "Inline Photo",
    name: "inlinePhoto",
    type: "object",
    fields: fields({
      image: createImageField({
        validations: {
          required: true,
        },
      }),
      caption: {
        options: {
          isHighlighted: true,
        },
      },
    }).map(defineField),
  }),
]

Here's the entry in my portable text content—seems valid at a glance:

{
      "_key": "6a301adce983",
      "_type": "inlinePhoto",
      "caption": "Entrance neon at Meanwhile Brewing Company in Austin, TX",
      "image": {
        "_type": "image",
        "asset": {
          "_ref": "image-4e361da2735deb4eb71bbacfc3c29f4a4d28932b-5584x8368-jpg",
          "_type": "reference"
        },
        "crop": {
          "_type": "sanity.imageCrop",
          "bottom": 0,
          "left": 0,
          "right": 0,
          "top": 0
        },
        "hotspot": {
          "_type": "sanity.imageHotspot",
          "height": 0.15280882352941044,
          "width": 0.24264705882353096,
          "x": 0.5367647058823527,
          "y": 0.46327205882352973
        }
      }
    }