[confirm]Word of Binding prompts cost twice-x spell

[travolter]

Describe the Bug:
You have to pay the X casting cost twice. 1st when you cast the spell, and 2nd after target selection.

Which card did behave improperly?
Word of Binding

Which update are you using? (date, name)Which type? (duel, gauntlet, sealed deck)
Manalink dev version 250c78bd updated 11-5-19

[Aswan jaguar]

This is a conflict between x_spell_with_x_targets() function and with engine that counts it as an x spell so each charge cost. I know how to fix it be removing the value from ct_all.csv so engine doesn't recognize it as an x spell but that is wrong and causes other issues. Unfortunately I can't understand how to make it not charge mana in function and still use engine's x-spell function.
A related Korath 's post about this:
viewtopic.php?f=86&t=20258&p=210455&hilit=x+spells+engine#p210455
And it is something many x spells suffer from.