I'm using Portfolio. Whilst the pages do not show a date, when I hover over the image to open a page it shows title and a date (?year last updated). Date is toggled off under page header. Any ideas?

After adding new pages to my Portfolio site I found that dates had started to show under the page title when hovering over the page image to enter. Date is toggled off under header. I wonder if anyone can help me get rid of it? I could not find any appropriate suggestions on the question section.