[Zubersoft]

Please remind me what type of device you have, what OS version its running, and which MIDI library you are using (its the default bluetooth if I recall based on the issues you had previously). When MobileSheets is put into the background and is using the legacy BLE library, it actually doesn't do anything other than stop scanning for devices if it was currently scanning. It does not try to release/drop the connection to any bluetooth device. So I'm surprised you are seeing that issue. Perhaps it has something to do with changes Google has made in the OS itself with later versions, as it is stopping more and more things from working in the background. One thing we can test out, if you want to try it, is I can drop the bluetooth connection if MobileSheets is put in the background, and then try to reconnect when it is shown again. Maybe that will stop the hanging you are seeing.

Mike