Hi. I've just pinged upstream about this in gitlab.
Étienne already has a machine to reproduce this, if somebody else wants to reproduce (and hopefully try to debug), please contact me privately. The other thing we could do is to try version 2025.1.0 and see if the problem is still there. I would be willing to try that in my autobuilder setup, but I'm not brave enough to try upgrading the package and would appreciate if somebody could care about that. [ BTW: A few days ago it was not the case, but now the tracker page for scilab finally shows that version 2024.1.0+dfsg-7 can migrate regardless of this bug, which is the proper thing because forky is also affected ]. Thanks.

