Yesterday I tried making a Bitcoin transaction and I accidentally added the same address it's coming out of. Mistakenly I may have tap the copy to clipboard without realizing. Luckily for me I did not click the send button before I realized my self.
Just a reminder, always double-check your receiving address before sending. Bitcoin fees are high, and if your Bitcoin gets sent to the same address it's coming out of, it might return, but you'll lose the fees. You can't afford to lose $10 due to a careless mistake that could've been prevented.
I made this mistake or I just really wanted to try what would happen I don't remember why I did that but I did when the fees were a few sats. Already we have threads like
How to lose your Bitcoins with CTRL-C CTRL-V which convey the same what you are talking about and the importance of ensuring the recipient address while sending BTC. For the convenience, we can use the QR codes now and its better compared to copy/paste.