NativeActivity dispatchKeyEvent override receives delete event after apostrophe event

[j***@gmail.com]

I am overriding the dispatchKeyEvent function of NativeActivity in my NDK
app. I found this is the best way to easily get unicode characters for
typed events, which I propagate up to my custom C++ portable text edit
field. It all works fine, except I was puzzled that when I press the
apostrophe(') key on the soft keyboard nothing is echoed in my text edit
field. It turns out that a pair of press/release events are generated for
the apostrophe as expected, but these are followed immediately by a pair of
press/release delete key events!

I'm guessing that at some point some handler was/is auto-generating a
second apostrophe when one apostrophe is typed (cf some editors
auto-generate 2 double quotes when you type "). Then some android coder
didn't like that, couldn't fix that code, and hacked a 'fix' by
auto-generating a delete event to delete the second unwanted apostrophe.

Can anyone confirm this? Seen it before? Is there a proper fix?