Chrono hand reset - help!

A lot more info is needed here in order to help. Is it mechanical or quartz? What is the brand and movement?

for instance, it is quite common for some quartz chronograph calibers to start resetting to a biased position, but there are also ways to recalibrate using the buttons. If the watch in question is quartz and has one of these calibers, It’s really a non-issue.

but if it is a mechanical watch, then it could be as simple as the watchmaker did not set the hands properly after a service. Another problem for a lot of mechanical chronos is the hour hand can “creep” off the zero register after resetting due to a worn or misaligned part (a spring, I think). But a service should fix most problems like this.

again, pictures and more info would make it easier to help diagnose the problem.