Something odd with my arrow finish

[monterey]

Ok, I'm making up three dozen youth arrows. Each dozen is stained with a different color, but are identical Water based acrylic. They all have five topcoats of minwax wipe on gloss water based poly.

I put the last coat of poly on two days ago and the finish is cured to a good hard finish on all shafts,.... except one. It is still tacky and refuses to dry.

All shafts are identical POC.

Any thoughts on what is going on?

Not a serious problem, but certainly a curious one.