How to fix column width in list view, please help!

Hi, thanks for purchasing!

AFAIK this has nothing to do with Visor or TotalFinder. It is related to List View behaviour under recent macOS versions:
https://discussions.apple.com/thread/5499589

I was able to hack this behaviour in TotalFinder but my code applies only to Finder versions before El Capitan:

I could investigate it and try to introduce a new tweak for Sierra. Unfortunately I don’t remember the details right now.