Just a guess, so I could be completely wrong. But I imagine Sync doesn't run text from the post feed through a markdown parser/renderer. It only does that when viewing the full post. At least that's the reason why we have a similar result in Thunder for lemmy.
It's much older but the RE1 remake for GameCube has that same stressful (in a good way) gameplay you're describing. Looks pretty good for how old it is too in my opinion. It's the only RE game I've finished cause I'm a wimp 😅