Character disappears when at a point in tilemaps

Okay, so I’ve found an interesting and totally breaking bug, when using tilemaps with multiple layers (Background, foreground, top fx ect) after reaching a certain distance your character will disappear.

So, ive made two tilemaps with 32 tiles up/across and another with 200 up/across
I noticed on the 32 map that I was disappearing walking roughly halfway across it, same thing for the 200 one

I’ve found a work around where I create a duplicate map, disable all the layers excluding the background and then move the background layer thousands of units back on the Y axis, it doesnt look any different because im using Orthographic view on the camera, but surely theres got to be some fix for this? its not an ideal solution and makes creating a game like a metroidvania impossible, any ideas if this is simple user error or a bug?