A few years ago I was responsible for provisioning accounts in an application with a shitty admin UI. The process for doing so was to create the account and then give the account access it required by clicking in the list of available access and then clicking the arrow to move it over to the assigned list. Or you could just double click on it. To remove access you did the same thing from the assigned list to the available list. Or you could go into a particular item and remove the accounts from it that way. One day I was working through terminating a department that had been laid off when I noticed that on one of the largest access items the account list only had names up to “j” in the alphabet. Apparently my mouse had developed a double click problem and I had managed to select the bottom half of that list. I did not have access to any logs or anything that would allow me to reverse that change and it was a Saturday so I was basically fucked until Monday morning when I could contact the application support and they could hopefully fix it.