Okay, I've figured it out, and it turns out that the issue is a completely different accessibility error.
I had custom names disabled via preferences, so keys were passing through to the game because the edit field wasn't available. I must have enabled it at some point by accident, because the toggle for it isn't actually labeled. I'm wondering if their are other settings in their with that issue as well? Might be worth going through and checking to see that they are all available and togglable with voicing enabled just encase.
Thanks for the attention on this issue! ☺