Trainer dropouts

I have had trainer dropouts on downhill sections for a while and believe I have found the cause but not the solution. When I stopped pedalling for over maybe 5 seconds the cadence sensor obviously appeared to have dropped out by zwift and a re-search is triggered causing all ant devices to drop out and reconnect. On a group ride this would cause me to get spat out the back and lose the group. I can replicate the same fault with me leaving the room and my hrm being out of range causing the same dropouts. I have switched from using a separate cadence sensor to using my flux as cadence and this has stopped the dropouts proving my point.
My question is: is the ant triggering a zwift programming fault? If a sensor drops out why can’t the others stay connected but the dropped signal rejoin??? I am sure I am not the only one with this fault.