I found something very interesting while trying to do the "Setup Hell" strat in Madubu Gorge. At the very end of the strat, I noticed something was completely wrong. This part is different in my version of TR3:

Original?: My version:

Best part is, I own the original Tomb Raider 3 CD with the original level files:

I don't know which level is the "true original" and I would like to know if there's a rule for having the game installed with the latest patch or not (not that I patched the game, it's 100% installed from the original CD, that's why I'm so confused)

Probably a version thing (japanese ps1 is different too iirc ). My Madubu file is 1Kb more than yours.

I think you should come in tomb raider discord to have more answers to your question : https://discord.gg/011hZixyZfK5g61NL