It's no biggie, and recall clicking that credits button after downloaded EU for first time but never again.
I've only found the missing planets error under the client loader's Credits.
The other screens listing the planets shows all of them correctly. (that I've found so far...)
And for those curious but don't have the time to dig around or unsure of dates.
The error isn't based on when CryEngine2 or when Planets came out:
EU switched Calypso to CryEngine2 on Aug 2009
- ROCKtropia - Apr 2010
- Next Island - Dec 2010
- Arkadia - May 2011
- Cyrene - May 2012
- Monria - ? 2013
- Toulan - Feb 2014
Also if it was a conspiracy then Calypso would be on the 1st line (imo), which it is not...
Guessing since the planet names aren't alphabetical and in 2 columns. It seems likely that Cyrene and Monria were planned/sketched-out to be put on 1 line together. But when the designer made the credit screen they must've simply overlooked that line??
Noticed the incorrect screen has Toulan's old slogan: "Planet Toulan Dominate The Sand"
And Toulan's current slogan is: "Planet Toulan Journey Through The Sands"
Maybe that's a clue to how far back this could've happened and went noticed?