Lines with multiple function calls interrupts more than one time.

[3esmit]

Consider the following contract:

pragma solidity ^0.4.2;

contract A {
  
  function f1() 
   internal 
   returns (int){
    return 1;
  } 
  
  function f2() 
   internal 
   returns (int){
    return 2;
  } 
  
  function f3(int a, int b) 
   internal 
   returns (int){
    return 1+2;
  } 
  
  
  function t() 
   returns (int){
    int i = f3(f1(),f2());
    return i;
  }

}

if you place your interruptor in line 26 and press resume, it will interrupt 3 times in that line.
This happens that it interrupts before entering the function, when you press resume it will enter f1 and return to that line, so it interrupts again, then enter f2 and return to that line, interrupts again and than goes to f3 and returns, interrupts again.

I would expect that it interrupts only once, if I want to enter that functions I can use step in button.