Rachio controller Gen 1 won't stop watering after lost WiFi connection

I’m reaching out to see if anyone else has experienced an issue with their Rachio Gen 1 controller.

Twice in the past two years, my controller has lost its WiFi connection during watering sessions. Unfortunately, it continues to water for hours without stopping, even though the power remains on. This has become quite concerning for me, especially when I’m away for several days, as it can lead to overwatering and potential lawn damage.
Is this a known issue with the Gen 1 model? If so, does anyone have tips on how to prevent this from happening in the future?

Thanks for your insights!