AI randomly gets stuck and doesn't move to player

I’m using dynamic navmesh generation for my ai characters to navigate on. I followed Mieszko’s tutorial for setting up navigation invokers and setting the navmesh to dynamic generation.

Most of the ai characters are working fine, they are moving to the player and start attacking, but 1 out of 10 gets stuck permanently either at their spawn point or they just get stuck while they are navigating towards, the player. They get stuck even though the navmesh has already been generated under them.

I tried having just a flat plane as ground without any obstacles, but still they got stuck.

I have no idea how to troubleshoot the issue since the problem is so random and there’s no indication of any errors.

I hope someone has seen this before and can help. Many Thanks!