relayed here and copied below: https://github.com/bitcoin/bitcoin/pull/12610#issuecomment-376278677

this logic here means that anytime we do a wallet match on rpc debug console, it will not find the wallet unless it has no `.dat` extension: 3dba3c3#diff-8c9d79ba40bf702f01685008550ac100R491

This also means you can load two wallets(eg `wallet.dat` and `wallet`), and they will look the same in the drop down selector.

imo if we're supporting arbitrary filename extensions we should just display the entire name
wallet(_wallet),
        valid(_valid),
        relock(_relock)
{
}
WalletModel::UnlockContext::~UnlockContext()
{
    if(valid && relock)
    {
        wallet->setWalletLocked(true);
    }
}
void WalletModel::UnlockContext::CopyFrom(const UnlockContext& rhs)
{
    
    *this = rhs;
    rhs.relock = false;
}
bool WalletModel::getPubKey(const CKeyID &address, CPubKey& vchPubKeyOut) const