The feature was added to deal with the situation that some users chose to put everything in the title section and unnecessarily occupy a significant amount of space on the page.
Certain adjustments have been made. e.g. If the second reply happens after a few hours, or if both replies are with meaningful contents.
Rolia has been constantly improved so it's easy to be used.
For now the change on this feature is not of the highest priority. But it will be kept in mind.