GET and manchette horizontal lines for operational points are not in sync

[axrolld]

What happened?

In many cases, Km or Linear, the lines from the machette aren't aligned with the horizontal blue lines of the GET:

Same here with a lot of zoom:

And in a case of a very unzoomed view, there are too many horizontal lines in GET:

What did you expect to happen?

I'm expecting the lines to be in sync.

How can we reproduce it (as minimally and precisely as possible)?

1. Manipulate the GET

On which environments the bug occurs?

Dev (SNCF), Recette (SNCF)

On which browser the bug occurs?

Google Chrome

OSRD version (top right corner Account button > Informations)

68e0513