Android soft keyboard backspace not working

I’m not sure if this is a known issue (there was a similar problem in early versions of Android), but we’re not getting any events from the backspace key on the Android soft keyboard, for quite a few newer Android devices (eg. Google Pixel 3).

Before we embark on workarounds, we wondered if anyone has seen the same problem, or has any advice to offer?

Kind regards
-Mat Draper

I should add that we’re on 2.0.8, by the way.
Thanks
-Mat