Showing a different prefix for a different DM prompt

[Sarccq]

In the image the prompt slain by shows Sarccq as [Starter] which is the incorrect prefix for the player. Then when /kill is done it shows the correct prefix for the player.
These are the promts im running:

'%luckperms_prefix%%player% was slain by a %luckperms_prefix%%killer%'
and the one for suicide is: '%luckperms_prefix%%player% killed themselves'