How to reproduce:
"Spell Check" button is shown in front of search auto suggest results. See screenshot:
This has been passed on to our support team to get fixed. Thanks for reporting the issue!
Unfortunately, this issue is a bug in our product and we've have filed a detailed bug report for our development team to investigatate.
Just a quick update - this was resolved in v12.9 of our software. I've also went ahead and added your community to the upgrade priority list to 12.9. The usual communication will follow.