When i try to copy paste something like this, the preview comes out like this :
Παναθηναϊκός-Ολυμπιακός: Την κούπα του Παναθηναϊκού είδαν Δώνης, Χατζηγιοβάνης (pics)
«Τρελαμένος» Ρανγκέλ πανηγυρίζει την κούπα (vid)
Συγχαρητήρια σε Παναθηναϊκό από ΕΟΠΕ
Τσάτσιτς: Αποκτήθηκε για να τον ανεβάσει επίπεδο και το έκανε!
And here has the same problem
This issue is already reported. Please read this support topic: https://gvectors.com/forum/wpforo-advanced-attachments/copy-paste-from-other-site-results-in-two-versions-of-photo-in-post/#post-20251
This is not wpForo issue. You've copied and pasted a HTML code with margin-left: -33.3% CSS code so it goes out from post wrapper. We have nothing to fix here, you just need to check the HTML code, find and remove that CSS code. It's on my screenshot below. Use the {;} button to access to HTML code in the editor.
Thank you @robert,
so has nothing to do with the issue that @Alvina told me ?
This issue is already reported. Please read this support topic: https://gvectors.com/forum/wpforo-advanced-attachments/copy-paste-from-other-site-results-in-two-versions-of-photo-in-post/#post-20251
This issue is not related to the topic she refereed. So we found this problem is totally different. And the problem is in the HTML code you've copied.