Mouse and Keyboard Unusable After MiBox Android 12 Update

I've been dealing with an annoyance since the Android 12 update on my Mi Box: I can't use a mouse or keyboard. Despite having installed the Keyboard app from the Google TV Play Store, it double-clicks on letters. I even tried a different keyboard, but it simply closes the app with a single click. This is extremely aggravating. The second update was supposed to fix these problems, but it also failed. I never had any issues like this when I was using Android 9. I regret updating at all! It's been a frustrating experience dealing with these lingering issues post-update. I'm sharing this to draw attention to the ongoing issues with the Mi Box's Android 12 update. I'm hoping the company takes notice and addresses these issues as soon as possible.