tile gone after load save

Issue description

every save I load some of the tile I que to be put down vanishes and has to be redone, so far only new tiles. but have to redo it next save too
majchrzakjoshua@gmail.com if you need more info

Reproduction steps

save game
come back next play session
look at resource layout
not really sure why it is happening

Game version and build number

v0.7.6a b466

Operating system

Windows

Attachments

main - Copy.save

Files not imported: main - Copy.save

I definitely noticed this on far earlier versions too (7.1?), had a large amount of ghost tiles that just had random holes, so ended up just unity-placing all of them at once since

This was fixed in one of our recent updates. Thanks for reporting it!