[LE] Testing custom worldspace in game - only one cell renders

[porqueque]

Hi, I'm new to modding and right now I'm working on my first custom world space. This is the first time I'm trying to test it in game, but this is what happens.

I run the game with my .esp plugin active (tried from both Mod Manager 2 and through Steam). Then I coc to the specific cell in my world space (that contains a cocmarkerheading) from the game menu. And there's only one cell rendered. It looks like the terrain is cut where the cell ends, and there is just bottomless nothingness ahead :).

Anyone came across something like that? I've been searching for a couple of hours now and can't seem to find a solution. Any suggestions are welcome, I'd really appreciate it.