AutoNotification Strange behaviour with AutoNotification Categories

I have an Autonotificaton Categories action that changes one WhatsApp category Vibration to Disable (see first image). However, it also sets the Category to 'Silent' (in second image, you can see Silent text is highlighted in blue and the options are the same as if the category was in silent). The third image is how it is supposed to look.

I'm not sure if this is an AutoNotification, Whatsapp or Android 11 bug to be honest.