This has been a bug for a while. Unless I'm missing something, the game should be reading the file from the DLC folder of Crusade (if you have that expansion), and if so, there are more issues than just the one planet.
The production for PrecursorTreasury, PrecursorQuarantine, and PrecursorExperimentalWorld go from 1 to 5 to 3.
(I have a folder for DLC4 in Retribution, but no files in it... so I'm pretty sure the Crusade version is the one the game uses rather than the DLC4 version, which has similar problems and additional differences from the file in the Crusade folder...)