undo redo button in virtual keyboard hangs the app

Hi,
I am using latest Radaee PDF for iOS. inside the PDF Reader, if we click on undo or redo buttons (available in virtual keyboard ), crashes the app.
Could you please help to address this issue.
Thank You.

May you double check are using last version?
We will thank on our side and, if needed, fix it to publish a new release.

Hi,

are you using the demo project or a custom implementation?
demo project doesn't have a particular action on keyboard undo/redo action.