What kind of oil did you put in?
I am not sure what you used But
Many synthetics are too slippery and cause the clutch to just spin
rather than lock up.......
If you did that just drain it and put an oil in it that meets the proper standards for the bike.... (per the manual SF or SG, API Standard)
if you went away from that standard... could be your problem
No Problem.. it probably will not have hurt anything.. just drain and replace..
I have heard of this before on other bikes
Have a good time, ALL the time !