I’ve noticed that when you hold “Ctrl + Backspace” to clear an entire word; Axure does not recognize the command and wont work.
Thanks for the report! It looks like this shortcut works in Axure RP 8, but does not work in Axure RP 9 on Windows. We’ve gone ahead and filed this on our end for further investigation. If there are updates to the bug then we’ll go ahead and followup here. Thank you!