If you have started rolling out the new release of Jaxx wallet . Your Jaxx wallet support the latest zcash (ZEC). “Overwinter Upgrade”. You are able to send ZEC transaction with this update upon your Jaxx wallet. Your ZEC transaction will be rolled out to all users over the next few days . If you are to much worried about the issue that you face on your jaxx wallet and you want to you want to fix out these issue or when you transfer ZEC you will update your Jaxx update and you face same issue on your Jaxx wallet. The best option will call on Jaxx customer support number to fix such types of issues.