Sending 2.875 to yourself gives extra rewards

Today I was about to test a feature and send to myself the amount of 2.875 Ada.

I copied the address for receiving to the sender, put the exact amount of 2.875 Ada, and hit send. To my surprise, a few moments later, came to me back in transaction 4 Ada! I thought, what if somebody programs a bot to do that every second? They are mining Ada or just bugged the wallet?

I tried to transfer out that Ada but couldn't for some reason the coins went stuck in the wallet and I couldn't make it. The wallet I used was Yoroi and that was a very strange situation for me.

I never thought that a hard coin, peer-reviewed and so important could have a nasty bug like this.

I wished some of you try and let me know what happens.

Thank you❤️