Thanks for the prompt response, Leroy. However, I click left, right and middle mouse button and nothing happens. I use Directory Opus and checked the settings in this program and turned off any specific function involving middle mouse button.
In Listary, I checked the settings at integration and Mouse Middle Click to show pop-up is on (Options - 2023-04-19_08-45-01 - TechSmith Screencast - TechSmith Screencast).
When I remember correctly, in version 5 these favorites were default everywhere without needing a mouse. Am I mistaken?
Can you please help me to take the next steps to solve this? Thanks!