I once spent a whole bunch of time trying to debug and iterate on an issue in a dependency library my application was using. No matter what I tried it just didn

I once spent a whole bunch of time trying to debug and iterate on an issue in a dependency library my application was using. No matter what I tried it just didn’t seem to help with the issue - even though I was certain of the fix. I was going crazy trying different things with none of them making any difference. I eventually realized I was running into a bug in my build environment. It wasn’t detecting the library had any code changes so it was “optimizing” my build by skipping that library. It was one of a dozen or so dependencies so it wasn’t immediately obvious. Eventually, I set a breakpoint somewhere else in the library code and realized it wasn’t being hit because the source code didn’t match the symbols! I felt pretty dumb once so figured this out even though rationally I know it wasn’t my fault.