old highscores are disregarded in ranking

[Karl]

I have a highscore file that reaches several years back. When I choose a setup I haven't played recently, I notice that the old scores are shown but lower scores are sroted before them, so while they are displayed in the highscore list, they are treated as if the score was lower than displayed (possibly 0). I also have the impression that not all scores are displayed in the highscore list (because when playing I usually name the entry by the score number, e.g. when I managed to rank third, I would mostly call the entry "ke3" while when I reach a highscore I will enter KE in upper case and no number, and it is very unlikely I played one setup only a few times, so if a highscore table shows only some entries and even more so if they have numbers, it is likely that others are missing.

The old highscore was shown as the current highscore during playing that game, and when playing again it was replaced by the lower new one.

Package version: 2.5+dfsg1-1build1
Ubuntu version: 20.04.3 LTS

I attach a sample screenshot of wrong sorting and my .bl2/hscore.dat file (after playing once more).