I was cutting a couple weeks ago with my MS362, (I wonder where I got that from?) no such safety feature but I see how that may become more mainstream, like seatbelts in cars & the higher 3rd brake light, etc.
I was cutting large (east coast large) 30"-52" ash tree and ran the saw out of gas. Refilled, it started once for 3 seconds then died again. Couldn't get it to restart. Pulled plug and grounded to cylinder, and barely a spark. I asked the mrs. aka my better half, to run to the local stihl dealer and get me a couple plugs and a new 25" chain while she was there. They sent her on her way with a 20" chain (in a 20" box) and 2 of the smallest spark plugs I have ever seen. So small that if I wasn't paying attention, the entire plug could have fallen into the cylinder head thru the plug hole! Called store, got an apology from a different salesman, but really nothing that made me feel like they wanted to make it right. Wife went back and someone with eyes, gave her the right chain. I bought spark plugs online because they said that plug was the direct cross reference in their book, so obviously that's wrong. Anyway, put in new plug, started right up. I'm not sure what caused the plug to go, I think it was the fact it was hot, & I was cutting so close to large logs that the exhaust didn't really have a great path to escape, it was blowing right up against a wall of wood, too much for plug, ended up fouling out???