I get the word listing instead of the ad title displayed

Hi,
i do not know what causes it. But since few days customers are complaining
that their titles are not being displayed. And i tried it out and it is true.
If I choose a title for the ad, it only display listing.
Attachment 4517
How come what is that? I have noted that also the ad preview plugin not working correct.
In only display the photo for preview. Is that maybe causing it?
Am i the only one which encounter this problem?

Hello,

Make sure that the browse form and title form is built for your category: Categories > Categories > find a parent or current category of the listing > Build > Build Title Form & Build Browse Form