When I try to place down the parking lot markings, I can't unless if it's on grass. Sorry if I should've used the Bug Report discussion. I didn't know which one to put this on but it sounded more like one for this discussion.

I can't find your screenshot, but I'm also having the problem with vehicles in the air.

I do not have this problem anymore. What mods are you using? Most mods for cities skylines now are broken, abandoned or not updated in a while so cause a few glitches.

I'm referring to the issue of cars parked in the air.
And I'm only using Parking Lot Snapping, Harmony 2.2.2-0 (Mod Dependency), and Parking Lot Roads.
Only the mods necessary for this parking mod to work.

Apparently the problem with cars parked in the air is coming from the Parking Lot Roads mod