The launch screen has a stretched aspect ratio that applies to all images and text.
Controller (Backbone in my case https://playbackbone.com/) doesn't work on the launch screen. I connected it after starting the download.
When scrolling the patch notes, the notes move faster than your finger, making it hard to properly control for those with limited mobility.
General Feedback
L/R buttons to switch views are very small and show no visual feedback that they've been touched. An optimized launch screen specifically for mobile would be better than reusing the PC/Console launch screen. Text is incredibly small and hard to read on the Mini.