Playing in a Realm on Nintendo Switch Bedrock version, with another person, we were running along coming back to our home base after a long voyage (about 3000 blocks) when we came across the end of the world! Everything was invisible from the edge onward. One of us logged out to see if it was a performance problem but it persisted with no change. This is almost exactly like this invisible barrier glitch:

https://bugs.mojang.com/browse/MCPE-38868

The main difference is you can travel about 25 blocks out over the edge until it stops you from going any further. Our home was seemingly in this invisible area about 800 blocks further on.

I tried to remedy it by saving and logging off, then logging back in by myself after restarting the Switch – no difference! The edge was exactly as we left it. So, I thought maybe this is a rendering bug that will fix itself by going to the nether and back. I created a portal and stepped through. It connected with a home-base nether portal on the other side, and upon re-entering it I ended up home 800 blocks inside the invisble area which now appeared visible! Everything seemed fine.

I realized i forgot a few things back on the other side, then, where I made the "escape" portal. So, I decided to run the 800 or so blocks overland to go retrieve it. When I got almost to the spot where I built the escape portal, I came again upon the edge of the world – only this time I was stuck on the home-side and everything on the other side where I was trapped before was invisible! I tried to get across the invisible expanse but could not. So getting to the invisible chunk through a portal works, but the origin chunk is then invisible.

A few notes:

• The edge is not completely a straight line/wall - it seems to roughly follow the edge of a chunk.
• You can traverse into the invisible area about 25 blocks before coming across an impassable wall.
• You can see "moving" things in the invisible area – still moving around like normal: mobs, fish, entities, lava, ender-chests, sea-grass, etc.
• The edge does not change appearance no matter the video settings.
• The edge can be experienced by two players at the same time exactly the same way in Switch split-screen or in single-player screen.

It almost appears like en entire 500-block wide chunk has totally invisible geography.

Attached is an image of a screenshot I took of the area.