I am developing browser extension for multiple browsers. I have ported my extension from Chrome with Microsoft edge extension toolkit. For demo and testing purposes I have packed it as .appx package and signed it with self signed certificate.
When loaded as unpacked the extension worked perfectly however it seems that the packed version cannot save data into storage.sync. In console I get these messages:
API Call: 'storage.sync'
SCRIPT5007: Unable to set property 'elementContent' of undefined or null reference
What can I do here? Giving the unpacked source codes to testers is not an option.