New placeholders option doesn't work with multiple editors

[NicHaley]

Describe the bug The new placeholders option has a bug where when using more than one editor, the placeholder will be overwritten by the last editor instance.

For additional context on my use-case, I have multiple editors to support a different editing experience between "Title" and "Content" sections of a page (similar to notion).

To Reproduce Create two editors. Ex.

const titleEditor = useCreateBlockNote({
    placeholders: {
      default: "Untitled",
    },
  });

const contentEditor = useCreateBlockNote();

The placeholder for both will be the default placeholder text.

Expectation: The title editor should have Untitled for its placeholder

Misc

• Blocknote: 0.12.4