REILs some on posts, some flush with the ground... is this a known issue?

I tried to scrub through the forum to see if this had been posted before, apologies if this is a duplicate topic.

Some of my REILs are above ground on posts (as expected) while some are sitting flush with the ground.

This is my first scenery project, and am trying to figure out if it is a setting i am missing, or a bug of some sort.

Think it’s just a bug as have seen this a few times while creating airports, my current one has this issue same happens with taxi edge lights though they seem pretty screwed anyway.

I noticed this too and tried to mess with this by varying aprons and taxi patch scales. I was not able to figure out any solution. I’d say bug…