Issue description
Expanding the island, placing green squares where ever it allows me to dump rock, yet it will not. No warning.
Expected behavior
Expected it to do as commanded to place which ever yellow box as primary location for to dump.
Reproduction steps

If the game will not allow us to dump here, than why would you allow it to place the green dumping squares in a non valid area???
I have wasted 30 hours if not more on that save file.
If you so could make a patch to allow me to continue my project, that would be great
Game version
Latest version
Attachments
SM 2.save
Its a WinRar file.
The ".zip" on the file, replace it with ".rar."
Github does not accept WinRar format...
Anyways, its my save file.
Files not imported: SM 2.save