I have a Salesforce Connected App using Salesforce Canvas and the signed request method. The signed request is received decoded and access token used without issue in my developer org. I have since packaged the app and installed in a Sandbox environment, when I then load the canvas app, the access token appears invalid. I make a request to grab a list of reports using the access token and receive an 'Invalid Session' response.
Does anybody have experience with packaging Canvas Apps who may be able to help with the above?