Class method refactor tool "Add definition..." doesn't always include class name in definition

Summary
The class method refactor tool "Add definition..." doesn't include class name in the definition if the previous method uses a function-try-block. For years I've been bothered by this bug in the QT creator refactoring tools, not being able to pinpoint the cause, and not investigating because it's a minor thing, and I just manually type it every time. And today I found the cause.

Example
Given the following header and source file:

class Foo
{
public:
    void method1();
}

#include "Foo.h"

Using the refactor tools on getValue, I'm provided with the option to "Add definition in Foo.cpp". The result:

#include "Foo.h"

void Foo::method1()
{
    
}

All is well. Declaring a new method, the header becomes:

class Foo
{
public:
    void method1();
    void method2();
}

Using the refactor tools again on method2, the cpp becomes:

#include "Foo.h"

void Foo::method1()
{
    
}

void Foo::method2()
{
    
}

All is still well. Adding a function-try-block to method2, the cpp becomes:

#include "Foo.h"

void Foo::method1()
{
    
}

void Foo::method2()
try
{
    
}
catch (const std::exception& ex)
{
}

Declaring one more method, the header becomes:

class Foo
{
public:
    void method1();
    void method2();
    void method3();
}

Using the refactor tools again on method3, the cpp shows the problem:

#include "Foo.h"

void Foo::method1()
{
    
}

void Foo::method2()
try
{
    
}
catch (const std::exception& ex)
{
}

void method3()
{
    
}

Note the missing class scope on the definition of method3.