Sep 19 2020
This is still an issue on:
Samsung Galaxy A8 (2018)
Microsoft Launcher 6.2.200902.91368
Notification Badges do not appear on the Frequently used apps pinned page or on the card in the Glance view.
Dec 21 2020
This is still an issue. I use the Frequently used apps page as my home page and displaying the notifications badges is an important feature for me. I rarely use the default home page since the Frequently used apps page works well for me.