I am facing an issue with CR 15 iA cobot
I am not a fan of Cobots to begin with, as I feel there are few and far applications that make sense to be Collaborative, and the term gives end users an unrealistic expectation. But let's be fair here, the question was asked around a CRX, and you are basing your opinion off the CR-Series. As SkyeFire states, the force sensing is different between the 2 series. I think Fanuc came a long way from the CR to the CRX.
As far as the CRX goes, I find most of my problems relate to me wanting it to be a Yellow Robot, and expecting it to be the same. They take some getting used to. Fanuc has gone down a path similar to other brand cobots trying to make a robot that is easily deployable, and therefore "easy to program". But the step by step menus, and Icon programming, take away some of the more in depth tools/settings, that (at least I as an integrator) am used to using.
That being said, software wise, I find myself utilizing the conventional TP Views, rather than the Icon Editor or other menus. Being a bit too "Dumbed Down" compared to what I can do on a traditional TP, the guided menus are just a bit of a nuisance.
Hardware wise, they seem to be alright. Biggest issue I've seen is the Tablet TP loses connection. Also, its a touch screen tablet, so dirty fingers, gloves, etc. can pose issues.
Biggest gain, Grab that sucker in Manual Guided Jogging and throw it where you want it. (or at least relatively close. But that feature is not limited to Fanuc/CRX.