https://drive.google.com/file/d/1-WqFQOGThACNLToFni8YtfGaXgBj2Kse/view?usp=sharing
Not sure what exactly triggers this bug but it can be reproduced quite easily:
- Deploy a field wall
- Move the mouse a little bit and deploy another field wall above the first one
- Pick up the first field wall
- The second field wall is closed