3D Text and Powercopy : Font gone missing

Hello,

I need to create a powercopy of a sequence with a 3D text. For an unknown reason, the font (which is a standard one I suppose) from the original isn't applied in the copy. The box still refers to the correct font but the preview is missing and the font applied is another one.

If I create another font box, the original font is correctly applied.

Has anyone encounter such a behavior ?

Thank you for your help,

Rémi.

Original Font box : Wrong font applied 
New Font box in the powercopy's sequence : Font correctly applied