TS Lint Error on title prop in Accordion component

[pedoch]

When a ReactNode or JSXElement is passed to the title prop in the Accordion sections array, it throws an error.

Types of property 'title' are incompatible.
        Type 'ReactNode' is not assignable to type 'string | undefined'.
          Type 'null' is not assignable to type 'string | undefined'.

However, the documentation says it accepts a ReactNode for further title customisation.

[bartaz]

Weird, the AccordionSection does accept ReactNode:

react-components/src/components/Accordion/AccordionSection/AccordionSection.tsx

Lines 28 to 31 in ab70886

	/**
	* The title of the section.
	*/
	title?: ReactNode;

[bartaz]

And we do have example where nodes are passed to the title:

react-components/src/components/Accordion/Accordion.stories.tsx

Lines 195 to 204 in ab70886

	export const CustomHeadings: Story = {
	args: {
	sections: [
	{
	title: (
	<>
	Advanced topics{" "}
	<span className="u-text--muted p-text--small">optional</span>
	</>
	),

Could there be something else that is wrong/different?
Would you he able to try our storybook example in your env to see if that works?