Will be fixed in the next update. Since this statistically only causes a small bug in every 4500th registration I hope you are okay if I don't pay a reward for this. 
Ok. That's is really a minor problem. There is one more minor thing. One can use SQL LIKE template characters in the search field (% and _). It is more like a feature but as it is not documented somebody could think search is working not as expected, entering '100%' but receiving same as for '100'.