I'm using the RU app on an Android 8.1 tablet to connect to a Windows 8.1 system.
I've now added a Bluetooth keyboard to the tablet and it works great with RU *except* the Ctrl key apparently doesn't get transmitted to the Windows system. For example, if I'm typing in Notepad and type Ctrl-S, the Ctrl key gets ignored and Notepad adds an "s" at the current cursor location.
If I use the RU app menu to briefly enable the Ctrl modifier, I can get Ctrl-S to work but it's a pain.
I've verified the Ctrl key is working correctly and is detected by the Android tablet by using it successfully in the stock Android "Memo" app.
Is there a way to get the app to pass through the Ctrl key?
Could you please double check if there are any special utilities/software installed, especially those that could use or modify the behavior of the keyboard? Like clipboard helpers, touch-typing learning apps, etc.