Finite outer islands in the Minecraft End?

I am playing on a public server with a giant map.
After travelling a huge distance in the End and passing thousands of islands, suddenly there are no more islands. I guess I am at the edge of the outer-islands-donut.
What is the algorithm to determine at which coordinates the outer islands stop generating?
According to https://minecraft.gamepedia.com/The_End#Outer_islands
These outer islands generate infinitely
If so, why am I travelling through nothing but void space?
Update: I haven't seen any island in the last 20 000 blocks and im still going. I doubt any islands have been removed by worldedit or even by hand. I assume they do not generate infinitely. I don't know which version of MC has been used to generate the map I'm on.
Best Answer
This is due to a terrain generation bug in Minecraft, which is at the time of writing still unresolved. The relevant bug report can be found on the Mojang bugtracker: https://bugs.mojang.com/browse/MC-159283
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Are the outer end islands infinite?
As written in the Wiki, the outer islands of The End generate infinitely as far as you go.How do you get to the outer islands of the end in Minecraft?
Another way of accessing the islands is by using elytra and firework rockets. The outer End consists of some large islands, with chorus plants and End city structures....To teleport to the Outer End, a player has to:How many islands are there in the end in Minecraft?
Environment. The End consists of one large island surrounded at a distance by many smaller islands, all mainly composed of end stone. There is a gap between the central island and the outer islands of about 1000 blocks with nothing but the void.What is the outer end in Minecraft?
End Cities can be found in the Outer Islands of The End, but they are very rare and you may have to travel a long way to find one. In an End City you will find chests full of treasures, guarded by formidable mobs called Shulkers. End cities are lit by a new light source called an End Rod.Can you Fly From the End Island to the Outer Islands - in Minecraft?
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