Please disregard, sorry, I missed that there was a 2nd page of the thread, which shows the response.
Wondering though why it does not show "load more items" button at the bottom like it does with the overview page. Lack of interface ergonomics.
For instance: https://forums.oracle.com/thread/2550097
I opened the thread to write a response.
The messages appears in the Overview Abstract and preview page, but when I open the thread it is not there. I'm using flat views (I find threaded view, which is the default very inconvenient when reading a large thread)
This is the second time I experience this problem. Waiting for 30 min. for the response to appear. Previously the missing response appeared right after I posted another response, but that's not the way it should work.