This happens every time I have to send Bitcoin somewhere - a small clock symbol opens up in the electrum wallet, and the colour slowly changes from orange to friendlier shades of green as the number of confirmations of the transaction rises from 0 to 5.
Every time, I want to go somewhere, but feel obliged to plug in the computer and leave it switched on so that the 5 confirmations can happen in peace. I worry that otherwise possibly the bitcoin may disappear into the ether and I would lose it or otherwise that maybe I would not lose it, but the transaction would cancel itself half way and the recipient would never receive it.
This is an electrum wallet (4.0.9)
What is the truth of this? Can you close the wallet and switch of the moment you've clicked 'send' or should it be allowed to sit there switched on for forty minutes or whatever it takes to collect its 5 confirmations?