I have a GM who recently was trying to leave another one of his campaigns that stopped playing, and he accidentally disbanded the current game I was in. I'm not sure if this is widespread or not, but it seems like an easy fix. Put a box that makes you type out a word, delete or something else, that also shows the current game you're trying to disband above it. This would also differentiate the process of disbanding campaigns and leaving them making it harder to accidentally do one when you meant to do the other.