I also have problems with testnet. Some transactions I sent a few days ago still show as unconfirmed in Mycelium even though they have 4800 confirmations on blockr.io.
And then I have sent a Segwit transaction. I first sent it without fee and later resent it with 5000 Satoshi fee. That still hasn't been confirmed after almost 2000 blocks have past. It is not displayed on tbtc.blockr.io nor on test-insight.bitpay.com (and I can't push it to blockr.io, because their push interface can't parse witnesses).
Or is something wrong with it?
> bitcoin-cli getrawtransaction 35aafd22054d15bcb4f2444de56989b18fd9765f3c33fbb8b89ff12092d611f6
0100000000010100675e46bdcd69821fbdc43abea61c1ba081469b6e53e3f8007073bf96be9fb20100000000ffffffff01388be605000000001976a914d6dcdaddc4208548846583ef1162c199309d3dc488ac02473044022018d165ad5cc04701eb0d19149bd48451775cbd0abcdb93232b167058952061ed02200279f0e9764e7aa555a83a05b19ab600d76afc60995c31e3dd6f7e63bfcfbb2301210279be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f8179800000000
I just ran that through my application and there's nothing there, it threw an exception. The transaction doesn't exist. I've actually been having issues with sending Bitcoin to paper wallets. One feature of my system is that it can print a paper wallet, then send Bitcoin to it. Sometimes it took weeks before scanning the WIF code gave a balance, others have never worked even though the transaction is there on the blockchain.