Does UE4 AI path plans as it moves?

I was playing with Ai characters and behaviour trees when I noticed something. If I have a box and I place it in the path of my AI character, then press play it will path plan around it. However, if I press play then set the box’s position to obstruct the AI character’s path, the Ai character will reach the box and stop there for a bit then end the behaviour tree.

How can I make it actively path plan, hence if it sees something (i.e. before reaching it) that is obstructing its path it will re-path plan quickly and carry on moving. In other words, make it behave more like a human.

Thanks in advance.