Yep - me too. Toggling airplane mode or just wifi fixes it until the next time. Strangely, similar issues with the latest macOS beta as well. Waking up from sleep it connects (eventually) to my wifi but I have no internet access. Turning wifi off/on solves it.I’m seeing Wi-Fi dropouts.. not fully disconnecting. Just saying no internet and then a refresh and it works.. not limited to safari...