My sim I have been playing has been a level 10 firefighter for quite some time. Just had her quit the other night to focus on raising her daughter and to try something different. I use a firehouse I made myself.
I have been experiencing this issue all along her career, and actually before that the last time I played a firefighter. What I have noticed is this, small house fires will always cancel out. She got lots of large house fires that never cancelled, and other situations about town to tend to. The only ones that would cancel out are the small house fires. I could mouse over the icon and see what it was but as soon as I directed her to respond or as soon as she would do so autonomously, the fire would just disappear. She was getting small house fires once or twice a week.
