Custom Events don't have 'c' symbol

So I’ve noticed that whenever I watch a tutorial and the person in said tutorial makes a custom event node, it has a little ‘c’ in the arrow symbol
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However my custom events have the same symbol as regular events

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Are you using the same version of the engine as the tutorial?
With version 5 new color palettes were introduced to parameters and some ui changes were made.
It could also be a matter of operating system one could be mac the other pc (they look different)

Depends on the tutorial but usually yeah.