And what turn have you reached?
That won't change much, as there is still requirement of event_counter mongol_em 1 to get those Templars.
I've checked EDB and it seems there should rather be:
recruit_pool "koj knights dismounted templar" 1 0.20 1 0 requires factions { france, } and hidden_resource recruit_koj and not event_counter templar 1 and event_counter mongol_em 1 and not event_counter first_turn 1
The red part was missing, so the unit was present in the browser. After and not event_counter first_turn hit 1 it disappeared, as expected. The same problem concerns Templar Knights. I think these two shouldn't be recruitable at the beginning at all. I think that there is a bug, yes, but it only make those two incorrectly visible at the beginning. They should be available only after the Mongol invasion begins. I haven't checked if they indeed appear after the Mongol come onto the scene, though, and I'd appreciate if someone could do that. We would be sure then.