Good thinking, Scumble373!
Removing the screen rotation daemon and rebooting the tablet has indeed fixed it - and the original problem that caused me to need the daemon, where the screen orientation flipped mid-game, seems to have been fixed too (I'm guessing that one was on Sammie... the only thing I can say about this firmware without getting banned for swearing is it's "a mite quirky").
Removing the screen rotation daemon and rebooting the tablet has indeed fixed it - and the original problem that caused me to need the daemon, where the screen orientation flipped mid-game, seems to have been fixed too (I'm guessing that one was on Sammie... the only thing I can say about this firmware without getting banned for swearing is it's "a mite quirky").