That's not a bug. Your web browser has a capacity, it's not able to save whatever your type in for long long time.
-sailor(Ocean & Mountain);
2020-1-23(#12618241@0)
When you go to another page, the text would be flushed away. So you will need to stay in the same page before you post it.
-sailor(Ocean & Mountain);
2020-1-23(#12618296@0)