When I go to Excel-VBA-View-Project Explorer, the "Project Explorer" display does not appear

On any workbook I open on my computer and I try to use "Project Explorer", there is no display of its information, though I can see the displayed module code in the VBA window.

Any idea of what's going on with this?

Mac

The problem turned out to be the positioning of the vertical bars in the VBA display. I had made the "Project Explorer" column to thin and had pushed it way over to the left side of the display.

So if you run into this problem, just adjust the column's width.