So in the 20230330 latest firmware update, Hansshow fixed an issue where when you are using Autopilot and especially with UI1 with the lane keeping animation, when you have your hands off the wheel for a certain period of time, on the 15 inch screen you get that blinking blue light warning to retain control of the wheel. Well before the 20230330 firmware came out the display was not showing the same blue light warning. With the new 20230330 firmware, the blue light warning is working on UI1 but not on UI2 on the mini display just like the 15 inch display.
This youtube video below summarizes the issue with the lack of blue light warning on UI2. If you look at the 1:30 and 2:35 marks you will see the blue light warning on UI1. Then if you fast forward to around 4:25 and 8:00 you will see he tries the same test on UI2 and you can see the blue light warning only showed up on the 15 inch screen but not the 5.16 inch display. I wonder also now if UI3 has the same issue as UI2. My guess would be that UI3 would have the same issue as UI2. Hopefully this clears it up.