As of 19.0.2, all the known issues that came from the update were fixed, and even those were very minor overall.
OBS is primarily developed by one person, supported by community volunteers. We can only test so much, so there's always bound to be something we miss when it starts hitting the public. Anything that completely breaks OBS' normal function gets fixed ASAP, and any other minor fixes are usually within a few days of release. That is, of course, if there's even anything like that at all. Most updates go pretty smoothly. :)