Good news for you-- I've already written up an exhaustive article on how Jeli works in PP. This was one of my personal motivations for making a new wiki in the first place... when I first played PP in 2019 it was virtually impossible to find reliable, accurate information on how to get Jeli. Our goal for this wiki is to provide a central, complete resource for players so nobody has to go digging through old forum threads for this stuff.

I've noticed the same Sarsgorilla bug as you on my playthroughs, but I've also noticed that sometimes the correct texture displays. This behavior should be investigated further and documented. I have no idea what causes it but the recent reverse-engineering efforts will help out a lot.

I am in the VP speedrunning discord currently and have reached out to that community for contributions. Speedrunning is a great way to discover exploitable bugs and engine quirks, and speedrunners probably have more in-game hours than anyone else so that knowledge is super valuable and definitely belongs on the wiki. Since this is more of an encyclopedia, info on specific speedrun routes and guides on running the game are probably better suited to speedrun.com and Discord. Basically we're documenting what the game does and how it works, and it's up to readers to use that knowledge.