I have in the past been a cabinet maker and cabinet finisher for a very long time. I have spent untold hours with exotic (and not so exotic), wood and wood finish. I have spent double that around pool.
While those finish lifts can be triggered by bumping, my experience has always been, that no matter what, when this type of blemish appears, it is because the finish was applied improperly, and the "bump" is just the proverbial straw.
To be fair, exotic hardwood, because of the natural oils many of the species contain, can be very difficult to apply finish to properly. I know for a fact that many cue makers use utter garbage for finish (PPG LOL), and apply it as if it were an afterthought.
Finishing things well is an art in and of itself. Today's finishes require mixing in precisely correct proportions, the use of perfectly clean equipment, perfectly clean spray environment, correct humidity, correct temperature, the correct number of coats, correctly prepared woods, and even application. Any of these fail, and you will get a problem finish. The proper finish properly applied should adhere to the wood for at least 50 years.
At $400 for an otherwise pretty fancy cue, DP must be cutting it close on margins, so the first thing that will go is QC, and the second is CS, but in my opinion, any cue maker that tries to pawn this type of problem off on the customer is in denial.
Good luck with your sale.