i have the exact same problem. it has only happened to me in "snow mode", from a stop, going on wide left turns (turning left on double lane highways, both directions. i get up to about 20-25 MPH and loose all acceleration of the gas pedal. rpms do not move. 2 times i heard a clunking noise and the car jerked. switch out of snow mode and then the car takes off. mine stated on my new 2023 kia telluride sx prestige for the 1st time at 100 miles after new. since then it has happened an additional 8 times.
i have set up a 3 way dash cam. 1 showing the instrument cluster, console selector and one forward. i brought mine in for the first time last month. the dealer could not duplicate it. i told them i have dash cam video of it happening and they did not care to see it. the said "i believe you". everything checked out for them. gave some paperwork stating snow mode distributed power differently, stating everything is operating as it should. well, your not suppose to lose all acceleration power through a turn , causing an accident or possible death from an accident. they sent me on my way. guess what, it happened again. my 3rd appoitment is scheduled in 2 weeks.
i have a friend who works for a hyndai dealer and their dealership is aware of it, happening intermittent with some of their pallisade costumers but they tell them its fine as they dont have a fix.
buyers, make sure you report this issue to the NHTSA to force kia/hyndai to recall and fix the issue.