Issue description
I have overlapping oil deposits from a custom map, and when 1 of the overlapping deposits is empty, the other overlapping deposits won't pump anything anymore. You can still build on them, the layers are still visible, but as soon as the pumps are build, it shows an empty reserve.
Reproduction steps
I can't upload my zipped save file
Uploaded custom map
Game version and build number
v0.8.4b b593
Operating system
Windows
Attachments
FlatMapUltraV1AdaptedV6.map