Hi i have a 2020 sport glide i bought new and every now and then when i stop at a set of lights the revs won't drop below 2200 rpm. It stays at high rpm for about 15 min and the drops as it should i have had it at the local Harley shop and they can't find anything wrong with it. Just wondering if this has happened to anyone else. Thanks.

AIC sticky or even a worn TPS.  Both easy to swap out to test if its resolved.