I think I've found a BUG, let me explain:
Device: xiaomi redmi note 5 pro (whyred)
rom: MIUI by xiaomi.eu 10.3 | 8.12 27
Using the native calendar, if I add any event, it obviously shows in the Guide of homepage the daily events.
The bug is, that, if i create or edit any event of my account with GOOGLE CALENDAR from any device (xiaomi, laptop, etc) it adds the event to my xiaomi calendar BUT in the guide it doesnt show those events edited or created with GOOGLE CALENDAR. Then, what I have to do is to create again the event from my device and delete the one edited or created with GOOGLE CALENDAR.