No reports of failures, but my S7 battery gets pretty hot during charging. Well, when charging and using at the same time, it gets hot.
Solution? Set it on the charger and leave it be.
I bought a wireless charger off Amazon for my s7. I just have a pad I set it on on my night stand - works great and you don’t have to do anything to the phone - it just works.. even through a case..
It cost something like $12...