Its not a bug of the mod, its just how the game works.

There could be many reasons for that.

The settler may be overload with tasks (since this game is not meant to be played with 1 settler only).

Or he could be very low in a important need, like hunger, thirsty, mood, sleep, etc

Or there could be a lack of tool for something he wants to do.

When any of that happens he will get stuck and wait for you to assign or give him what he wants.

Anyway, in this mod, at the beginning, you have to micro-manage you settler, keep a eye on his needs and plan your priorities, give him 1 task at a time.

I hope that helps.
Good luck!
Cheers

Awesome. I did the micro managing and it worked great. Thanks