Note for abstract class's method

Question

The goal I am trying to achieve is that a note would appear on the left side of the method IsCropFarm(), yet it doesn't appear and gives me a java.lang.NullPointerException error.
I've already tried to create the CropFarm class as abstract class, and it works when I don't want to make a note to the method.

The code that I am using:

abstract CropFarm
{
    +IsCropFarm(): bool {override}
}
note left of CropFarm::IsCropFarm
    return true
end note

Any help is thanked.

EDIT:
It is surely a bug, once I put it into a new file, it works...
Once I set it to the right side it works. Seems funny.

Comments

Yes, it works...

Answer 1

It works for me.

@startuml
abstract CropFarm
{
    +IsCropFarm(): bool {override}
}
note left of CropFarm::IsCropFarm
    return true
end note
@enduml