Interesting. This is the first I've heard of that happening in this version of RPG Maker (maybe that has something to do with it being for Android). I have a keyboard reset program that someone created that would fix it for other versions of RPG Maker (before I found it on the RPG Maker forums, I could only reliably fix it by restarting my computer), but I would be very surprised if it would help you. I haven't looked on those forums since finding that program, but maybe that person has made one for Android. I'd think it wouldn't hurt to check at least. If it helps, the original thread was:
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.