Interesting glitch in RDR2 Story mode

[Fugl'o]

We are all curious about Guarma. That one island none of us got to explore.
Well, a lot of people explored it already with the help of some glitches and exploits, but here is another way to have the option to explore Guarma all by your own.
Stuff you will need: -completion of story mode until at least mission A Kind and Benevolent Despot.
-Some patience for long walking.
It is important to note that this glitch is extremely easy to achieve and will without a doubt be fixed in a matter of some days.
Now to actually do it, you will need to replay the mission A Kind and Benevolent Despot, where Arthur and Dutch go to rescue Javier from the Guarmian army.
In the middle of the mission, Dutch plans to explode the sugar factory, and tells Arthur to wait outside the factory, while he finishes some things, at that very time, Arthur goes outside, and we are supposed to wait for Dutch.
Now, you have very little time to do that, but instead of waiting you could climb the wall behind you, (leading to the Jungle,) and run from there.
From that point on, the mission is softlocked, and you can travel around Guarma and beyond, though it is important to note that the mission will fail if you shoot any gun what so ever, does not matter how far from the actual mission it is, so no shooting in this exploration .
I myself traveled around Guarma and beyond the map, of course a great part of the island is not even animated properly, for the developers never intended the player to go there.
You are now free to travel in Guarma! Have fun!
(There are some screenshots on the screenshot page if you need anymore stuff.)