Problems with Signature widget not saving signature

I am having problems with the signature widget. I can sign my signature in the image box, and view the encoded URL in a text area:   but when I save the record and re-open it the image has disappeared. And it appears the sometimes the URL is not saved at all:   or else the saved URL appears to be incomplete:   Has anyone else encountered any similar issues?  Thanks.
1 answers

Check out the testproject on Github and try to reproduce what you have modeled in your own app. If that succeed file an issue here: