I’ve been having this odd issue on my iPhone XR. Every once in a while when I go to open an app towards the bottom of my home screen it won’t open with the first 1 or 2 taps. Instead it briefly shows the pop up letter of the key on the keyboard that would normally be where the app is on the home screen if the keyboard were open and I typed that letter. After a few taps the app opens. This happens maybe 3-4x daily with only the app in the bottom row second from the right (iMessage). I thought it might have been a bug in iOS 12.1 but it still happens with 12.1.1. Has anyone else experienced this on the Xr or any other iPhone or am I alone? I haven’t found any mention of it when googling.