Issue with generator Layout

[gui2one]

Hi, I am trying this nice lib in my project. I am able to generate a font atlas for a particular ttf file,
The issue is when I inspect the Glyph Boxes returned by :

std::vector<GlyphBox> boxes = generator.getLayout()

the first GlyphBox in the vector has all values of bounds and rect to zeros.
How come ?

I tried with different font files, same problem

my code to generate atlas :

int num_loaded = fontGeometry.loadCharset(font, 2.0, Charset::ASCII); //return 95, which is right I think
const double maxCornerAngle = 3.0;
 for (GlyphGeometry &glyph : glyphs)
{
    glyph.edgeColoring(&msdfgen::edgeColoringInkTrap, maxCornerAngle, 0);
}
TightAtlasPacker packer;
packer.setMinimumScale(24.0);
packer.setPixelRange(2.0);
packer.setMiterLimit(1.0);
packer.pack(glyphs.data(), glyphs.size());

int width = 0, height = 0;
packer.getDimensions(width, height);

ImmediateAtlasGenerator< float,  3,  &msdfGenerator,  BitmapAtlasStorage<byte, 3> > generator(width, height);


GeneratorAttributes attributes;
generator.setAttributes(attributes);
generator.setThreadCount(4);

generator.generate(glyphs.data(), glyphs.size());

auto layout = generator.getLayout();
for(const auto& box : layout)
{
        std::cout << box;   
}

[gui2one]

Oh .... I fell dumb ...
This is the SPACE glyph isn't it ?....