In the previous version of app inventor, (in which the options to display the screen on a mobile, tablet or monitor did not appear), I connected my app using BluetoothClient to an esp32, made the connection between both devices and sent information as normally, at the time of removing power to esp32, with the ScreenX.ErrorOcurred function, the app identified the error number 517 which means that the connection with bluetooth had been lost and then updated the bluetooth status, in this version more recently, this no longer happens, I suppose it is due to the updates that have been made to the platform, this method in the previous apps that I had made workes fine and in the new apps that I have made it no longer works, I hope they correct this bug or implement a way to know when the bluetooth connection is lost since the Bluetoothclient.isConnected function does not identify.
I leave the following image of function blocks in my case Screen1.ErrorOcurred, this is the way in which I identified that the connection with the bluetooth device had been lost in the previous version, in this new version of app inventor it no longer works
