(Not sure if Bug or by design)
If code that is triggered by Trigger Custom Unit for whatever reason errors, double-clicking the error in the Console log will redirect to the Trigger Custom Unit, rather than the code that is actually error-ing.
(The error message would also be on the Trigger Custom Unit itself as well, which can be confusing if you don't know that its the error message for some other unit that got triggered by this one.
While I can see cases where this might be preferred (specifically when you have many trigger sources) I mostly found it tedious to manually hunt down the misbehaving units each time.
Customer support service by UserEcho