Can anyone explain the following please?

I offer free postage but I have only just noticed an oddity on some of my listings. It depends on which page I look at but this is what I have noticed.

When I click on ‘My Ebay’, then click ‘Selling’, the ‘Selling overview’ page comes up. Bearing in mind I offer free postage I do not know why, but some of my listings on this page show the asking price ‘+ postage’. On that same page, if I then click the blue ‘Active’ button, the listings that had incorrectly shown ‘+postage’ now show the asking price ‘+postage (you pay)’, ie free postage, which is correct.

An example is shown below.

If buyers see incorrect information, they think they need to add on additional postage cost, as this could deter some people from making an offer.

Do I need to change/revise anything or do I need to speak to Ebay?

Many thanks.