[GS] Quadrireme removed from production even though Square Rigging or Refining has not been discovered

[Zoltan Messzi]

(1.0.1.501) I had 2 quadriremes in production, 1-2 turns from completion and they were removed from production even though neither Square Rigging nor Refining has been discovered. There's not even a single message about why it happened or anything...What gives?

 

[Wazabaza]

You probably did Steel tech, where it actually obsoletes the unit, not refining.

 

[Zoltan Messzi]

I did research Steel, but I didn't find the obsolete condition anywhere written, not in the description of Quadrireme or Steel, so I assumed it must be when a new Naval Ranger is introduced (Square Rigging and Refining). Then the Civilopedia needs to be updated...

 

[Wazabaza]

Almost all units have hidden obsolete techs.