Probably just the start
It's probably going to happen more and more, I'm afraid: As the XP Population (Very slowly) dwindles, the focus on testing and QA will switch to newer operating systems. Coupled with that, the vendors can't get ISV support from Microsoft to get the bottom of trickier issues.
It may not be fair, but a mix of financial return spending on XP, and less wild systems to verify updates means this will crop up again.
About the only small saving grace is that the people left on XP are going to get more and more technical, either due to being technical enough to do it already, or out of necessity to keep a critical legacy app running, so they'll get more adapt at sorting this kinda mess out.
Biting the hand that feeds IT
