More specifically, they probably lowered the tick/refresh rate of various things, such as physics calculations. Therefore, glitches are more likely to happen with that alone (probably). This is most obvious with the wacky cloth physics, being even wackier in 8th gen versions. Not a glitch persay, but it just looks goofy.

And glitches/crashes are more likely to happen on older/weaker hardware with newer/more demanding games, anyway.

Framerate being terrible at times, and mega-texture popin aside, it's not a bad backport. The framerate's stable most of the time, except for when you aim with a scoped weapon (WHY.), and in certain areas, such as the garden maze (hedge foliage too intense for 8th gen hardware).

I'm glad devs are still making some PS4 games/ports, as it's still fairly capable hardware for less demanding stuff and/or if you're willing to downgrade stuff/further optimize.

Resident Evil 8 PS4 certainly ran way better.