Orange box on screen only inside Pages app

I reported this in Feedback also.

So I was typing, hit a wrong key, Pages highlighted the mistake in an orange box, I took the correction, but the orange box remained static on screen. Remaining in place as I scroll and even when I close the document the artefact remains on the file page. If I open a different document the artefact is there too.

I have found the only way to remove it is by closing the app.

iPad Air 4th Gen. iPadOS 17.7.1 (21H216)

[Re-Titled by Moderator]