Can StaleObjectException still occur if Optimistic locking is disabled on a specific domain?

Question

I'm getting StaleObjectStateException on my update operation on a domain model that has Optimistic Locking disabled.

So it does not have the version column.

I'm under the impression that it would not check at all if the object is stale.

I disabled the optimistic locking by adding this to the domain model:

static mapping = {
    version false
}