It sounds like you may have sent your bitcoin to the wrong address, if that is the case it is likely gone. The 0.05 btc is sitting in address 1JERLf..., and has not moved since the coinbase withdrawl. If you control that address then there is no issue
You can try 'reset Jaxx cache', the wallet software might be experiencing some sort of bug and not displaying your balance correctly.
It may be worth checking any other wallet software you have, to see if you sent the btc to that wallet instead of Jaxx, and got mixed up about which wallet you got the receiving address from.