Hi Caleb,
We follow this example https://w3c.github.io/aria-practices/examples/combobox/combobox-select-only.html
Matching was fixed on this issue https://github.com/adaptlearning/adapt_framework/issues/2464 for the nvda screen reader, which is causing the symptoms you've described.
If you'd like a different soluction, can you put an issue on https://github.com/adaptlearning/adapt_framework/issues/ please?
Warm regards,
Ollie