I'm really curious about the business app you had problems with. I've yet to experience any issues with Firefox and apps since moving back to FF shortly before they moved to Quantum. I do know there are many apps that take advantage of non-standard features supported by Chrome, which could be the case here. I was finally able to completely ditch Google, though because of going back to college to finish up my degree, I'm stuck with MS for a bit longer, though I've been fairly pleased with W10, I'm a sucker for the Ubuntu subsystem.