Update: We've implemented a potential fix for this issue in the 1/23 update.
We've received reports of an issue where the KICKR may occasionally lose resistance and drop out of SIM mode while doing a normal (non-workout) ride. This issue has been reported on both ANT+ and BLE.
While we don't have a workaround for this issue, we're working with Wahoo to resolve it. We appreciate your patience and understanding as we get this sorted.