Overlapping grass & floor tiles when setting a field w/ click+drag

[ellroch]

Describe the bug see gif below. I clicked and dragged a grass tile from a one corner of the yard of my building to the far corner opposite the building. the grass was at the same height/altitude as the floor tiles that I had placed and they seemed to co-occupy the space. I wanted them to fill the unoccupied spaces at the given height/altitude for that range, leaving the occupied spaces undisturbed. I expected them to actually lay flat on top of the building since the field was occupied. I did not expect what I got, and I am not actually sure how to recreate it. experiments in gifs.

To Reproduce Steps to reproduce the behavior:

1. not yet certain. please view case gif where it happens (1), and my experiments afterward. this happens reliably, and is reproducible on the map shown. however I am not sure what is 'going right' to make it possible.

Screenshots/Videos/Twitch Clips Gifs: -Where it happens: -https://gyazo.com/4152d12235a4419a790422ca02490048 -What I expected (attempts at reproducing):

• https://gyazo.com/81211124607d743b386438dcd71f5a57
• https://gyazo.com/5a95d21e921a23114a551c2a0876604a
• https://gyazo.com/ddb99cb50cb1bb8bbde01e7ca32d9c49 -What the ideal result would be (by my judgement - maybe there could be a toggle key for this behavior):
• https://gyazo.com/97aa267454b7c542e2f5dc7b57c90873 Additional context

[LuPro]

This seems to be a bug in the system trying to avoid collisions on mass tile placement, I went into a bit detail in some other issue that I'm unable to find at the moment - another way to handle those collisions would be indeed nice, and it clipping into stuff just a bit higher is definitely a bug.