Under normal circumstances does it have a stable idle?
If it was a TB issue it should stall all the time.
What fuel are you using? How hot is the engine? Is it after a long trailing throttle? We need more info.
It’s throttle body sync and IT MOST DEFINITELY IS DANGEROUS!
It should be covered whether your bike is still in the warranty period or past it.
PLUS! It is to be checked and adjusted at every service. See your owner’s manual. It should like similar to this:
I use 93 fuel,last map update was last year with the 3500 mile service.
When it stall is hard to tell...sometimes with a hot engine (4 bars)....sometimes with a "cold" engine (2 bars)....but always when I pull the clutch shifting down.
Did had a talk with the dealer and they say its not a warranty issue...I disagree with that !!
They will do a map update and see if that solve the problem and check the TB`s