I hope this is the right section. I see that when I receive notifications those ones of WhatsApp are different between the others. Please see screenshot.
Is this something related Android 9 or Mi9T Pro? I have played in the settings but I'm not finding a "solution" (this is not an issue).
Screenshot_2019-10-03-14-50-49-581_lockscreen.png (5.03 MB, Downloads: 5)
2019-10-03 22:33:37 Upload