I thought it was acceptable so long as they don't partially overlap.  Overlapping is what screams OSMOSE/KeepRight issue flags.

You're correct, no errors on iD, but I will try take your feedback into account on the next golf course cleanup that screams for attention.  Wasn't aware that it was incorrect.  Would be a lot easier if the people originally mapping the golf courses would spend the time and care to do it correctly the first time, but I digress.