I have an FG, and its sister the EM, and no problems of any kind in the last fifteen years or so. The FG is a super little camera.
I also have an FG which has worked perfectly for 25+ years. I don't know why some people don't like them as they were very well specified for their time and are a nice compact body with a Nikon lens mount.
"People who say things won't work are a dime a dozen. People who figure out how to make things work are worth a fortune" - Dave Rat.