Hi, folks! Could anyone help with Button construction problem?

I’m getting the following log message after Construct() call of Button and application crashed:

result Tizen::Graphics::_Text::TextObject::SetBounds(const Tizen::Graphics::FloatRectangle&)(1134) > [E_OUT_OF_RANGE] The given rectangle(width:-4.000000,height:12.000000) is out of range.

In the following code:

MainSimpleButton::MainSimpleButton()
{
	result res = Construct(FloatRectangle(50, 50, 20, 20), String("Default button"));
	if (res != E_SUCCESS)
	{
		throw Exception("Failed Construct() button");
	}
}

Here is details. I have customized Button class:

#ifndef MAINBUTTON_H_
#define MAINBUTTON_H_

#include <FApp.h>
#include <FUi.h>
#include <FGraphics.h>

class MainSimpleButton : public Tizen::Ui::Controls::Button {
public:
    MainSimpleButton(); // <------- This constructor is used
    MainSimpleButton(const Tizen::Graphics::Rectangle &rect, const Tizen::Base::String &text);
    MainSimpleButton(const Tizen::Graphics::FloatRectangle &rect, const Tizen::Base::String &text);
    virtual ~MainSimpleButton();
};

#endif /* MAINBUTTON_H_ */

With the following simple implementation:

MainSimpleButton::MainSimpleButton()
{
	result res = Construct(FloatRectangle(50, 50, 20, 20), String("Default button"));
	if (res != E_SUCCESS)
	{
		throw Exception("Failed Construct() button");
	}
}

MainSimpleButton::MainSimpleButton(const Rectangle &rect, const String &text)
{ // Similar to MainSimpleButton }

MainSimpleButton::MainSimpleButton(const FloatRectangle &rect, const String &text)
{ // Similar to MainSimpleButton }

MainSimpleButton::~MainSimpleButton() {}

Add instance of this customized Button() is created here:

void MainForm::InitMainForm(unsigned long formStyle)
{
    if (Construct(formStyle) != E_SUCCESS) { throw Exception("MainForm Construct() failed"); }
	MainSimpleButton *btn1 = new MainSimpleButton(); // <----- This code
	if (AddControl(btn1) != E_SUCCESS)
	{
		throw Exception("MainForm AddControl() failed");
	}
}