To reproduce this issue:

1. Open the attached project
2. Open 'TestWebGL' scene
3. Press play
4. Notice 'Class B' being printed in the console
5. Build on WebGL
6. Now 'Class A' is printed

In the script, Class B derived from ClassA, ClassA contain virtual function overrided by Class B, ClassA pass the override function to a statemachine class, when the function is calling by the statemachine. The function called is suppose to be the one in ClassB but in this case the ClassA function is called.