Kickr Core switch connection to another device

Hi, my wife uses Zwift Ride with the Kickr Core from the bundle along with an iPad. I use a Kickr Bike and run Zwift on MacBook. Since last update it did happen already twice that while she was riding and I have firstly launched the app, her Kickr Core connected automatically with my device leaving her without resistance. Is it a bug or can I make something to mitigate such problems?

Yesterday we rode together and all sensors were paired with correct devices. Today, like mentioned above, Kickr Core has switched to my device while being already paired with other one.