LOD Chunks just won't load

I'm assuming this is a reasonably common issue given how much I run into it (yes, steps in the FAQ have been followed), but I can't seem to find any "help me" posts regarding it.
At random points, the game will stop trying to load and render LODs. This can happen after switching between dimensions, or just by leaving and rejoining a world or server. This affects all LODs for all worlds and servers.
I can't manage to get any error messages, nor does anything appear when messing with the debug views. I am not using Iris or any shaders.
Wondering if this has happened to anyone before and if there's any threads I can be pointed to, or what the best way to go about getting some debug info to share would be.
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