Playing Procipinee with Pariden, no mods.

I'm in war with Magnar and shortly after conquering one of his cities (still dead lands) I see a nearby Champion (Yoje) with high attack (apparently a Cedar bow). I send Procipinee and a small group to take him out (bye bye 1 tech point/season!). I have tried a few times and Yoje's behaviour in the tactical combat ends with the battle stuck.

As soon as Yoje gets his turn, he tries to reach close combat range. Once he achieves that and it's his turn again... Nothing happens as he cannot attack (apparently he tries to do melee attack, otherwise I have no idea of what's going on). Only way to end the battle is autobattle. Savegame with Procipinee ready to kick ass:

Procipinee attacks dumb champion

Unfortunately, the "bug" that shapechanges terrain on reload changes the original setting but Yoje doesn't seem to mind.