Welcome, there is a problem in the phpBB script and it leads to the fact that when I click on the user's posts, I select ascending to click once at the beginning and once from the end of the posts. The question is how to fix so that the risk does not occur in the phpBB script after restarting, so that the last action does not occur. When is ascending and I am clicking 5th page, there is another page.

I think it has something to do with the "sort by" box at the bottom left.
While no option in that box, using the numbers above or (the > and the < it seem to switch directions.
After choosing post order, the > and < produce the correct result.