Header not found

Hi,
I love this excellent, simple plugin!

But I have stumbled upon a problem.

I have a group consisting of a header and a list.
I saved that group as a reusable block.

When I insert the reusable block, the header in the group is not found by your plugin.
If I convert the reusable block to regular blocks (turns the reusable block back into the original group) your plugin properly finds the header in the group.

Unfortunately by converting the reusable block back to the group, I lose the advantage of editing a single source reusable block and having the edits reflected everywhere it exists site wide.

Can you modify the plugin to find headers in groups that are saved as reusable blocks? That would be a great addition to a near perfect plugin.

Thanks for your consideration👍🙂