Envelope Keytrack Range

I’m using a Super 6 Desktop with an 88-key controller. If I dial in a filter and amp envelope with envelope keytrack off, it works as expected across the full range of the keyboard. However, if I switch envelope keytrack on, all notes below C1 (assuming middle C is C3) behave as if the filter and amp envelopes have every parameter set at 0. Depending on the patch, this can make notes below C1 either gated with no envelope shape or completely dead. Am I doing something wrong or does there need to be support added for keyboard controllers that start at A-1?