go to your tools "Patrol" on there you can see "strict" if it's not checked check it :) .Hope it helped

I already replied you in the comments... They will return to their patrol route, but only if you move away from them and hide for a few seconds. They will keep chasing you if they can see you.

ok is the going to be routs with two npcs?

you can already have multiplayer npcs per route like i used it and made them do a trek around the map with at least 20 npcs on one route

i think the problem lies with map nodes, if the map isnt properly noded, the npc will not be able to determine where the last route was supposed to be at. (it would be useful if the npc could use a closer connected node if it cant reach its previous one)

the problem is not the map NPC