Once upon a time aka last week,

Was trying to fix an industrial automation software coded in Codesys. My company's standard library is riddled with bad documentation with a mix of English and German terminology.

Had to find out why a program kept crashing the program upon start up. Long story short and many stressful hours later, I found two functions in the standard library that caused an endless terminal process loop. Had to wrap the function in an 'if statement' so it would only run once. Function should have done this by default.