When you disable "Outgoing (Criticals)" and choose as secondary frame "Outgoing" it does not display the crit-suffix/prefix.
Only when i enable "show auto attacks" AND "show auto attacks (pre)postfix" then the abilities in "Outgoing" are shown with prefix/suffix
I think I got this to a point where it would be useful for you. Show Auto Attack & Pre/Postfix are weird options when you disable the frame. But at least your other damage will be displayed correctly 🤞
When you disable "Outgoing (Criticals)" and choose as secondary frame "Outgoing" it does not display the crit-suffix/prefix. Only when i enable "show auto attacks" AND "show auto attacks (pre)postfix" then the abilities in "Outgoing" are shown with prefix/suffix
(741 is a crit)