### Godot version

v4.3.dev.custom_build [d76c1d0e5]

### System information

Linux

### Issue description

When opening the color picker by clicking on a color property the color changes slightly.

### Steps to reproduce

* Click on a property with value `Color(.5, .5, .5) ` in the inspector
* Click away
* Open the color picker again
* See the color change to Color(0.502, 0.502, 0.502) in the "RAW" tab

### Minimal reproduction project

[ColorChangeBug.zip](https://github.com/godotengine/godot/files/13545089/ColorChangeBug.zip)

alpha_value->hide();
		alpha_slider->hide();
		alpha_label->hide();
	}
	switch (_get_actual_shape()) {
		case SHAPE_HSV_RECTANGLE:
			wheel_edit->hide();
			w_edit->show();
			uv_edit->show();
			btn_shape->show();
			break;
		case SHAPE_HSV_WHEEL:
			wheel_edit->show();
			w_edit->hide();
			uv_edit->hide();
			btn_shape->show();
			wheel->set_material(wheel_mat);
			break;
		case SHAPE_VHS_CIRCLE:
			wheel_edit->show();
			w_edit->show();
			uv_edit->hide();
			btn_shape->show();
			wheel->set_material(circle_mat);
			circle_mat->set_shader(circle_shader);
			break;
		case SHAPE_OKHSL_CIRCLE:
			wheel_edit->show();
			w_edit->show();
			uv_edit->hide();