Issue on Gant pdf

Hello,

When I generate a Gant into pdf ('pdf' button in Gant View), the result is not correct: headers not visible, and they are different polices sizes in the different pages. Please see the file.

The Projeqtor system is hosted: mypmo.projeqtor.org.

The tests have been made on MacOs / Safari, MacOs / Chrome, and by someone else on Windows 10, with the same result.
I have also tried to change the zoom level: it gives the same result.

But when, in the Gantt view, I use the print button, and then print into pdf, the result is correct, but in the bottom line, there's a Projeqtor technical link I don't want to appear and send to my contacts and ressources.

Please, can you help me?

Thank you in advance,
Joseph