One area of Antigua, specifically the area where you find Francis Drake's sword if you've completed the "Find Angelique Moulin's Father" sidequest, appears to lead to an area where you're stuck. Once there, you can't get out again by walking to any road end.
In fact the locators in "Antigua_Jungle_01" are set so that "reload1" loops back to "reload2", and vice versa. You aren't going to another location from which there is no escape, you're going back to "Antigua_Jungle_01". But teleporting back to the same location then seems to break the auto-teleport. You can still get out by going to a road end and pressing the spacebar.
This version of "Antigua.c" has a new location, "Antigua_Jungle_03", which acts as a bridge between those reloads. Now "reload1" leads to one end of "Antigua_Jungle_03", "reload2" leads to the other end, and the locators in "Antigua_Jungle_03" lead back to "Antigua_Jungle_01". As you're not teleporting to the same area any more, auto-teleport isn't broken.
In fact the locators in "Antigua_Jungle_01" are set so that "reload1" loops back to "reload2", and vice versa. You aren't going to another location from which there is no escape, you're going back to "Antigua_Jungle_01". But teleporting back to the same location then seems to break the auto-teleport. You can still get out by going to a road end and pressing the spacebar.
This version of "Antigua.c" has a new location, "Antigua_Jungle_03", which acts as a bridge between those reloads. Now "reload1" leads to one end of "Antigua_Jungle_03", "reload2" leads to the other end, and the locators in "Antigua_Jungle_03" lead back to "Antigua_Jungle_01". As you're not teleporting to the same area any more, auto-teleport isn't broken.