Making enemy corpses stay

[Animyr]

I recently started replaying D2 LoD (original version) after many years away and noticed that monster corpses were disappearing much more quickly than I remember. At first I thought it might be a patch issue so I switched to an old v1.12 copy of the game, which was the version I was using when I last played, but that didn’t fix the issue.

I would like the monster corpses to be more persistent like they used to be, and ideally last for the entire game session. Is there any way I can mod that (or any other way to fix it, for that matter)? I haven’t been able to find anything, other than a few people vaguely referencing having done so without explaining how. Maybe I just don't know what search terms to use, I dunno.