invisible planter box

I "Edit" here the savegame in, forgot about it, problem exists after save / load / restart.

Plant box.sav

Since we're on the topic of plant boxes, they have the "Disable building" option, whereas farm tiles don't, so I can't disable farm tiles from receiving  Dirt or Water or whatever.... maybe add that option, since it's really helpful when you run out of water/dirt and want to carefully control where your  precious Water/Dirt goes.