Knime 5.4.1. Straight lines

Hello,

How can I set in KNIME 5.4.1 to have classic connections and not curved connections as in the default settings? Can this be set up in Knime 5.4.1. at all?

Because the settings in Preferences → Knime classic user interface → Workflow Editor → Curved connections (check/ uncheck box) doenst work.

Thank you for help

Standa