Hackward Compatible
It's when you fix something so bad that it breaks the thing you used to fix it. It's like fixing a broken leg with a banana and then stepping on it.
She used a trick to get the app to work. The new update broke it. She threw her phone out the window.
He used a dummy file to hide the error. The fix came in and exposed it. He yelled at the programmer.
They used a fake password to bypass the login. The real fix blocked it. They had a meltdown.