I work in IT and we run into a common issue where whenever we announce that we have done something like adding a new feature to a program, updating servers or what have you... users start coming forward with lists of problems they have that they think are related to the changes.
For example we announced this morning that last night we turned on a feature to automate a process of sending out several different email notices to customers. This afternoon I got called into an emergency meeting about the new email "thing" being "all messed up". It turns out one user on the billing team received a standard email send reject notice from a customers email server because their mailbox was full and not accepting emails. Obviously in no way related to what we did but they had a panic attack and thought it was.
So long winded description but what i'm looking for is if there is some word or phrase for this phenomenon.