Wrong week days header direction for persian calendar in gnome terminal

Recently GNOME team added support for bidi language to their VTE widget which used by gnome terminal and other terminal environment like tilda.
see what happened when using jcal -p switch:

week days header showed wrong.
Is it something which should be fixed by VTE or by jcal?

[fzerorubigd]

I am not sure, I have the same issue in another terminal emulator, so I can say it is jcal.

I've just tested jcal in xterm which have no bidi support:

I also tested it using bicon for adding bidi support to xterm:

and it seems correct in both case.

[pvonmoradi]

FWIW, here is the result of my test in Xfce4-terminal, Alacritty and Konsole:

jcal -V
jcal version 0.4.1 (libjalali-0.4.1gitd9200f)
Written by Ashkan Ghassemi.

[m-agahi]

i have the same problem
manjaro - kde plasma - zsh

[fzerorubigd]

The only solution that comes in mind is to convert the numbers to persian as well. Currently the numbers are in english and header in farsi, and that caused this issue.
Double checking shows that it is with persian digits.