In a recent game I got one of the few mfg precursor tiles I have ever seen on my home planet. They are supposed to give a 7x bonus. There was also a 3x bonus tile. I bought the 3x factory first and the following turn I bought the 7x factory.
Arrgh, the 7x tile did not work. On the summary it said 0 bonus. I am wondering if this is a bug or something else. I have control N'ed endlessly but can't get another 7x bonus tile.
Where are the XML files for bonus tiles? I looked in planetary improvements and did not see them.