Thank you for the new update.
MI 9t: If you are in full screen mode and use timer, when it appears you are not able to press OK button, but it is only possible to open the full timer menu and press OK only there.
@Friwave, I've seen that, however I cannot enter Developer Settings, because I cannot see anything, like only power menu is working, I cannot enter into the setting, etc.
I am on Redmi Note 4 MTK, and having the same issue with the 8.8.23, after the android is loaded, it shows nothing except power menu if you pressed it. It was fine with 8.8.9.