Why do I see a red arrow when I get a notification?

[<A.BONFIGLIO/>]

Hi, my name is Alessio and I am thankful that I downloaded this app.
I have added 2 apps to have the badge in my status bar but when a notification comes, there is a big red arrow in the badge icon.

This is the screenshot. How do I remove this feature that looks like for accessibility?

Thanks all!

[xiaogdgenuine]

@bonfiglioalessio
#28 (comment)

[<A.BONFIGLIO/>]

Thanks a lot!
Maybe it is better to change the text to make it clear that it is what the red arrow shows?