Absolute links modified on print page

[kuon]

In my source markdown, I have an HTML block, like so:

<figure>
 <img src="/figures/depolarisation_fibres_cardiaques.svg">
 <figcaption>Dépolarisation de la fibre cardiaque.</figcaption>
</figure>

In normal output files, it is OK, but on the print page, it is replaced by:

<figure>
 <img src="01-Notions-Elementaires//figures/depolarisation_fibres_cardiaques.svg">
 <figcaption>Dépolarisation de la fibre cardiaque.</figcaption>
</figure>

01-Notions-Elementaires being the name of the chapter the file is in.

I can understand while relative URL should be modified, but absolute URL should be left untouched.

mdbook v0.4.5

[mimoo]

is this related to #1764?