I believe I have already mentioned this issue in the past.
It’s about the column width settings in the user interface:
When I enter the desired values (e.g. for Trigger Column Min Width, Action Column Min Width, Config Sidebar Min Width) and confirm with Enter, the columns adjust correctly and cannot be resized smaller than the specified value – so that part works fine.
However, as soon as I restart BetterTouchTool, the columns can again be resized freely, even below the specified widths, although the entered values are still visible in the settings. It seems as if the entries are not applied after a restart.
