Has anyone else had issues with client scripts seemingly caching and running an older version during development work? I'm debug logging and the script log doesn't match the output from the current script?

Yep I've seen it a couple of times, it's extremely confusing when it happens.

Glad it's not just me going mad. I'm guessing from your response that you've probably not found a way to stop it?

one thing I tend to do with client scripts is always run them with the browser devtools on and with caching turned off there. that way the only caching is when NS itself serves up the old version of the file repeatedly.