OK, it's not a big issue, but I didn't set any password to my wallet, now it's locked, and I have no idea which password to enter.
The first time you opened the wallet it gave you a password and told you to write it down. If you didn't grab it then, the only way to get it back is to stop siad, delete the wallet.json file, then start again.
You're not the only person who didn't get the password on the first try, we'll have to change it so that you can keep asking for the password until the first time you unlock the wallet (which requires the password). That at least guarantees that users realized there was a password before closing the window.
y0 T-man exciting stuffs, but it did not give me any password either (not even after when I deleted wallet) and guess what... The mining is still broken for v4 as I reported earlier on slack