What's the 'Send Mixed Request' button on the 'Send Coins' page of my SYNC wallet do?
I think you use experimental wallet with beta version anon nitesend technology. Now for correct stacking you need to download from OP and use Sync Wallet 1.1.0
I'm using v1.1.0.0!
Again, that is an older wallet, the nitesend beta. Use the wallet in the OP.