MIUI WhatsApp and Gmail notifications

In MIUI update to on my Mi5 phone, the notification LED light stopped working for some of the key apps. Such as calendar, Gmail and WhatsApp.

I could not find any way to resolve this, and saw other reports of it as well for others running Oreo-based versions of MIUI.

Anyway, last night I received an OTA update to version and am very relieved to say that the notification LED is working again.