Copy/paste on Facebook news feed

So I don’t know if this is a concern for anyone out there, si recently purchased the IPhone 11 Pro and since the first day, si have not been able to copy and paste within newsfeed on Facebook, something that I never had an issue with before. All my apple devices I am able to except IPhone 11 Pro and IPhone 8 Plus. Is anybody experiencing Or has experience this same issue? And how did you resolve it.