Picture 2 is where the issue occurs. The cave shows the arrow to enter (for both the cave in Lothorn and in Oaken), but the player cannot actually walk in for me at that time.
Also the cave I was supposed to fall in after the first battle didn't work for me either, the event simply teleported me back into the house. I didn't end up battling the ecoterrorist below the houses and assumed his event was cut in the remastered version.
There's a chance that it's an emulator glitch, seeing as how I'm currently on MyBoy on mobile. Unfortunately I won't have access to my pc to further test whether it works on other emulators.
Also been meaning to ask, there seem to be two seemingly identical IPS patches on the main thread. Is there a difference between these patches?